v3.26.1
REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of revenues from contracts with customers (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers $ 788,987 $ 985,980
Total revenues 967,599 746,421
Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 71,463 121,900
Total revenues 95,764 (169,661)
Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 150,021 176,476
Total revenues 264,712 217,668
Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 135,952 189,936
Total revenues 175,572 200,746
Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 164,148 195,886
Total revenues 164,148 195,886
magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 37,934 42,845
Total revenues 37,934 42,845
Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 34,784 41,207
Total revenues 34,784 41,207
UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 13,145 15,133
Total revenues 13,145 15,133
Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 181,540 202,597
Total revenues 181,540 202,597
Corporate finance, consulting and investment banking fees    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 130,628 154,388
Corporate finance, consulting and investment banking fees | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers (435) 457
Corporate finance, consulting and investment banking fees | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 131,063 153,931
Corporate finance, consulting and investment banking fees | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Corporate finance, consulting and investment banking fees | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Corporate finance, consulting and investment banking fees | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Corporate finance, consulting and investment banking fees | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Corporate finance, consulting and investment banking fees | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Corporate finance, consulting and investment banking fees | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 134,077 185,259
Wealth and asset management fees | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 7,111 4,795
Wealth and asset management fees | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 126,966 180,464
Wealth and asset management fees | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Wealth and asset management fees | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Commissions, fees and reimbursed expenses    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 28,417 32,377
Commissions, fees and reimbursed expenses | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 473 360
Commissions, fees and reimbursed expenses | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 18,958 22,545
Commissions, fees and reimbursed expenses | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 8,986 9,472
Commissions, fees and reimbursed expenses | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Commissions, fees and reimbursed expenses | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Commissions, fees and reimbursed expenses | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Commissions, fees and reimbursed expenses | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Commissions, fees and reimbursed expenses | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Subscription services    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 241,155 284,315
Subscription services | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Subscription services | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Subscription services | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Subscription services | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 164,148 195,838
Subscription services | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 34,459 38,408
Subscription services | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 31,394 37,216
Subscription services | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 11,154 12,853
Subscription services | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Sale of goods    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 191,114 220,619
Total revenues 191,114 220,619
Sale of goods | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 4,948 12,433
Sale of goods | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Sale of goods | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Sale of goods | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Sale of goods | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 1,236 1,598
Sale of goods | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 3,390 3,991
Sale of goods | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Sale of goods | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 181,540 202,597
Advertising and other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 63,596 109,022
Advertising and other | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 59,366 103,855
Advertising and other | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Advertising and other | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Advertising and other | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 48
Advertising and other | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 2,239 2,839
Advertising and other | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Advertising and other | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 1,991 2,280
Advertising and other | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Total revenues from contracts with customers 0 0
Trading (losses) gains, net    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 125,530 (57,007)
Trading (losses) gains, net | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 1,659 (18,575)
Trading (losses) gains, net | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 106,364 (41,710)
Trading (losses) gains, net | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 17,507 3,278
Trading (losses) gains, net | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Trading (losses) gains, net | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Trading (losses) gains, net | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Trading (losses) gains, net | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Trading (losses) gains, net | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Fair value adjustments on loans    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer (448) (325,498)
Total revenues (448) (325,498)
Fair value adjustments on loans | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 2,683 (325,435)
Total revenues 2,683 (325,435)
Fair value adjustments on loans | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer (3,131) (63)
Total revenues (3,131) (63)
Fair value adjustments on loans | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Fair value adjustments on loans | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Fair value adjustments on loans | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Fair value adjustments on loans | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Fair value adjustments on loans | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Fair value adjustments on loans | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 10,574 54,141
Total revenues 10,574 54,141
Interest income - loans | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 10,509 52,312
Total revenues 10,509 52,312
Interest income - loans | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 65 1,829
Total revenues 65 1,829
Interest income - loans | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - loans | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 6,993 70,862
Total revenues 6,993 70,862
Interest income - securities lending | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 6,993 70,862
Total revenues 6,993 70,862
Interest income - securities lending | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Interest income - securities lending | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Total revenues 0 0
Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 35,963 17,943
Other | Corporate & All Other    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 9,450 137
Other | Capital Markets | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 4,400 10,274
Other | Wealth Management | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 22,113 7,532
Other | Lingo | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Other | magicJack | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Other | Marconi Wireless | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Other | UOL | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer 0 0
Other | Consumer Products | Operating Segments    
Revenue from Contracts with Customers (Details) - Schedule of revenues from contracts with customers [Line Items]    
Revenue not from contract with customer $ 0 $ 0