Parent Company Only Financial Information - Condensed Statements of Financial Condition (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash and due from banks	$ 81,723	$ 157,388
Goodwill	17,636	17,636
Other assets	148,989	84,759
Total assets	8,045,911	7,976,394
Subordinated debentures	122,885	90,180
Other liabilities	111,139	141,047
Total liabilities	7,366,283	7,357,397
Common stock	341	341
Additional paid-in capital	263,375	261,533
Treasury stock, at average cost (3,561,270 shares and 3,311,769 shares at December 31, 2021 and 2020, respectively)	(75,293)	(69,400)
Retained earnings	497,889	442,789
Accumulated other comprehensive loss, net of taxes	(6,684)	(16,266)
Total stockholders' equity	679,628	618,997	$ 579,672	$ 549,464
Total liabilities and stockholders' equity	8,045,911	7,976,394
Holding Company
Cash and due from banks	16,038	28,033
Other securities	1,695	1,295
Investment in Bank	843,866	726,802
Goodwill	2,185	2,185
Other assets	2,791	839
Total assets	866,575	759,154
Subordinated debentures	122,885	90,180
Junior subordinated debentures, at fair value	56,472	43,136
Other liabilities	7,590	6,841
Total liabilities	186,947	140,157
Common stock	341	341
Additional paid-in capital	263,375	261,533
Treasury stock, at average cost (3,561,270 shares and 3,311,769 shares at December 31, 2021 and 2020, respectively)	(75,293)	(69,400)
Retained earnings	497,889	442,789
Accumulated other comprehensive loss, net of taxes	(6,684)	(16,266)
Total stockholders' equity	679,628	618,997
Total liabilities and stockholders' equity	$ 866,575	$ 759,154