Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	$ 19,475,000	$ 21,385,000
Total Securities sold, not yet purchased, at fair value	7,000	26,000
Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	18,936,000	21,199,000
Total Securities sold, not yet purchased, at fair value	7,000	26,000
Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	539,000	186,000
Total Securities sold, not yet purchased, at fair value
Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value
U.S. Government Securities [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Cash and securities segregated for regulatory purposes	44,837,000	68,758,000
Securities owned, at fair value	16,631,000	20,086,000
U.S. Government Securities [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Cash and securities segregated for regulatory purposes	44,837,000	68,758,000
Securities owned, at fair value	16,631,000	20,086,000
U.S. Government Securities [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Cash and securities segregated for regulatory purposes
Securities owned, at fair value
U.S. Government Securities [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Cash and securities segregated for regulatory purposes
Securities owned, at fair value
Certificates of Deposit [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	112,000	112,000
Certificates of Deposit [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Certificates of Deposit [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	112,000	112,000
Certificates of Deposit [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Municipal Securities [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	325,000
Municipal Securities [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Municipal Securities [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	325,000
Municipal Securities [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Equity Securities [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	2,407,000	1,127,000
Total Securities sold, not yet purchased, at fair value		1,000
Equity Securities [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	2,305,000	1,055,000
Total Securities sold, not yet purchased, at fair value		1,000
Equity Securities [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value	102,000	72,000
Total Securities sold, not yet purchased, at fair value
Equity Securities [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value
Options [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value		58,000
Total Securities sold, not yet purchased, at fair value	7,000	25,000
Options [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value		58,000
Total Securities sold, not yet purchased, at fair value	7,000	25,000
Options [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value
Options [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Total Securities sold, not yet purchased, at fair value
Corporate Bonds [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value		2,000
Corporate Bonds [Member] \| Level 1 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value
Corporate Bonds [Member] \| Level 2 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value		2,000
Corporate Bonds [Member] \| Level 3 [Member]
Schedule of Financial Assets and Liabilities Measured at Fair Value [Line Items]
Securities owned, at fair value