CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - $ / shares	Dec. 31, 2021	Dec. 31, 2020
Stockholders' equity:
Preferred stock, Series A, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, Series A, liquidation value (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, Series A, shares authorized (in shares)	10,000,000	10,000,000
Preferred stock, Series A, shares issued (in shares)	5,299,200	5,299,200
Preferred stock, Series A, shares outstanding (in shares)	5,299,200	5,299,200
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	41,610,939	34,813,302
Common stock, shares outstanding (in shares)	39,877,833	21,232,984
Treasury stock (in shares)	1,733,106	13,580,318