v3.26.1
Segment Reporting -Schedule of Segment Reporting Information, by Segment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Income Statement [Abstract]      
Investment income (loss), net $ (49,532) $ (6,500)  
Gain (loss) on financial instruments, net 9,774 (2,242)  
Interest and dividend income 40 44  
Trust services and administration revenues 593 753  
Other income 0 2  
Total revenues (39,125) (7,943)  
Employee compensation and benefits 11,845 16,851  
Interest expense 18,801 14,908  
Professional services 21,054 23,235  
Provision for credit losses 1,048 1,000  
Loss on impairment of goodwill and intangible assets 3,100 3,692  
Accrual (release) of loss contingency related to arbitration award 62,831 (54,973) $ 55,000
Other expenses 8,708 11,529  
Total operating expenses 127,387 16,242  
Operating income (loss) (166,512) (24,185)  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net 0 0  
Investments, at fair value 195,536 291,371  
Other assets 33,322 50,490  
Goodwill and intangible assets, net 9,914 13,014 $ 16,706
Total assets 238,772 354,875 [1]  
Operating Segments | Ben Liquidity      
Income Statement [Abstract]      
Investment income (loss), net 0 0  
Gain (loss) on financial instruments, net 0 0  
Interest and dividend income 0 0  
Trust services and administration revenues 0 0  
Other income   0  
Total revenues 33,421 42,583  
Employee compensation and benefits 1,597 1,436  
Interest expense 13,466 12,406  
Professional services 1,296 1,086  
Provision for credit losses 0 0  
Loss on impairment of goodwill and intangible assets 0 0  
Accrual (release) of loss contingency related to arbitration award 0 0  
Other expenses 854 1,571  
Total operating expenses 89,120 55,385  
Operating income (loss) (55,699) (12,802)  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net 169,684 244,070  
Investments, at fair value 0 0  
Other assets 464 859  
Goodwill and intangible assets, net 0 0  
Total assets 170,148 244,929  
Operating Segments | Ben Custody      
Income Statement [Abstract]      
Investment income (loss), net 0 0  
Gain (loss) on financial instruments, net 0 0  
Interest and dividend income 0 0  
Trust services and administration revenues 593 753  
Other income   0  
Total revenues 12,743 21,574  
Employee compensation and benefits 2,473 1,597  
Interest expense 0 0  
Professional services 527 651  
Provision for credit losses 1,047 0  
Loss on impairment of goodwill and intangible assets 0 3,427  
Accrual (release) of loss contingency related to arbitration award 0 0  
Other expenses 742 804  
Total operating expenses 4,789 8,286  
Operating income (loss) 7,954 13,288  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net 0 0  
Investments, at fair value 0 0  
Other assets 20,829 19,339  
Goodwill and intangible assets, net 7,469 7,469  
Total assets 28,298 26,808  
Operating Segments | Customer ExAlt Trusts      
Income Statement [Abstract]      
Investment income (loss), net (49,532) (6,500)  
Gain (loss) on financial instruments, net 358 (1,776)  
Interest and dividend income 0 0  
Trust services and administration revenues 0 0  
Other income   2  
Total revenues (49,174) (8,274)  
Employee compensation and benefits 0 0  
Interest expense 0 0  
Professional services 1,880 2,137  
Provision for credit losses 0 998  
Loss on impairment of goodwill and intangible assets 0 0  
Accrual (release) of loss contingency related to arbitration award 0 0  
Other expenses 921 794  
Total operating expenses 165,332 160,153  
Operating income (loss) (214,506) (168,427)  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net 0 0  
Investments, at fair value 195,536 291,371  
Other assets 15,542 16,328  
Goodwill and intangible assets, net 0 0  
Total assets 211,078 307,699  
Corporate & Other      
Income Statement [Abstract]      
Investment income (loss), net 0 0  
Gain (loss) on financial instruments, net 9,416 (466)  
Interest and dividend income 40 44  
Trust services and administration revenues 0 0  
Other income   0  
Total revenues 9,456 (422)  
Employee compensation and benefits 7,775 13,818  
Interest expense 5,335 2,502  
Professional services 17,351 19,361  
Provision for credit losses 1 2  
Loss on impairment of goodwill and intangible assets 3,100 265  
Accrual (release) of loss contingency related to arbitration award 62,831 (54,973)  
Other expenses 6,191 8,360  
Total operating expenses 102,584 (10,665)  
Operating income (loss) (93,128) 10,243  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net 0 0  
Investments, at fair value 0 0  
Other assets 33,110 45,209  
Goodwill and intangible assets, net 2,445 5,545  
Total assets 35,555 50,754  
Consolidating Eliminations      
Income Statement [Abstract]      
Interest income 33,421 42,583  
Trust services and administration revenues 12,150 20,821  
Total revenues 45,571 63,404  
Interest expense 150,983 142,543  
Provision for credit losses 71,907 40,693  
Other expenses 11,548 13,681  
Total operating expenses 234,438 196,917  
Operating income (loss) (188,867) (133,513)  
Statement of Financial Position [Abstract]      
Loans to Customer ExAlt Trusts, net (169,684) (244,070)  
Investments, at fair value 0 0  
Other assets (36,623) (31,245)  
Goodwill and intangible assets, net 0 0  
Total assets (206,307) (275,315)  
Consolidating Eliminations | Ben Liquidity      
Income Statement [Abstract]      
Interest income 33,421 42,583  
Trust services and administration revenues 0 0  
Interest expense 0 0  
Provision for credit losses 71,907 38,886  
Other expenses 0 0  
Consolidating Eliminations | Ben Custody      
Income Statement [Abstract]      
Interest income 0 0  
Trust services and administration revenues 12,150 20,821  
Interest expense 0 0  
Provision for credit losses 0 1,807  
Other expenses 0 0  
Consolidating Eliminations | Customer ExAlt Trusts      
Income Statement [Abstract]      
Interest income 0 0  
Trust services and administration revenues 0 0  
Interest expense 150,983 142,543  
Provision for credit losses 0 0  
Other expenses $ 11,548 $ 13,681  
[1]
(1) Periods presented have been adjusted to reflect the 1-for-8 reverse stock split on December 15, 2025. See Note 1 - Summary of Significant Accounting Policies - Reverse Stock Split, for additional information.