Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment Information
Interest income	$ 134,112	$ 77,314	$ 299,394	$ 229,301
Interest expense	48,727	8,433	76,253	24,050
Net Interest Income	85,385	68,881	223,141	205,251
Provision for credit losses	1,709		8,458
Provision for credit losses	2,225	1,079	10,888	2,427
Net Interest Income After Provision for Credit Losses	83,160	67,802	212,253	202,824
Noninterest income	29,186	40,271	102,954	117,062
Noninterest expense	34,951	29,472	98,941	87,739
Income Before Income Taxes	77,395	78,601	216,266	232,147
Income taxes	18,907	20,098	53,701	60,244
Net Income	58,488	58,503	162,565	171,903
Total assets	11,978,722	10,952,033	11,978,722	10,952,033	$ 11,278,638
Other
Segment Information
Interest income	2,301	1,328	6,064	3,859
Interest expense	(875)	(805)	(1,499)	(2,166)
Net Interest Income	3,176	2,133	7,563	6,025
Net Interest Income After Provision for Credit Losses	3,176	2,133	7,563	6,025
Noninterest income	(3,024)	(1,288)	(6,019)	(3,790)
Noninterest expense	7,126	4,628	18,051	12,605
Income Before Income Taxes	(6,974)	(3,783)	(16,507)	(10,370)
Income taxes	(951)	(1,158)	(3,790)	(2,816)
Net Income	(6,023)	(2,625)	(12,717)	(7,554)
Total assets	139,585	35,753	139,585	35,753
Multifamily | Operating Segments
Segment Information
Interest income	589	272	1,229	683
Net Interest Income	589	272	1,229	683
Provision for credit losses			1,153
Net Interest Income After Provision for Credit Losses	589	272	76	683
Noninterest income	39,421	35,022	121,037	96,828
Noninterest expense	21,741	15,569	60,231	45,639
Income Before Income Taxes	18,269	19,725	60,882	51,872
Income taxes	4,903	5,277	16,468	14,492
Net Income	13,366	14,448	44,414	37,380
Total assets	343,443	280,927	343,443	280,927
Mortgage Warehousing | Operating Segments
Segment Information
Interest income	31,240	33,153	74,816	101,675
Interest expense	15,089	2,334	22,686	5,657
Net Interest Income	16,151	30,819	52,130	96,018
Provision for credit losses	222	(585)	849	(1,709)
Net Interest Income After Provision for Credit Losses	15,929	31,404	51,281	97,727
Noninterest income	1,106	2,734	4,316	9,930
Noninterest expense	2,332	2,971	7,699	8,570
Income Before Income Taxes	14,703	31,167	47,898	99,087
Income taxes	2,902	7,950	11,070	25,239
Net Income	11,801	23,217	36,828	73,848
Total assets	2,735,278	4,685,037	2,735,278	4,685,037
Banking | Operating Segments
Segment Information
Interest income	99,982	42,561	217,285	123,084
Interest expense	34,513	6,904	55,066	20,559
Net Interest Income	65,469	35,657	162,219	102,525
Provision for credit losses	2,003	1,664	8,886	4,136
Net Interest Income After Provision for Credit Losses	63,466	33,993	153,333	98,389
Noninterest income	(8,317)	3,803	(16,380)	14,094
Noninterest expense	3,752	6,304	12,960	20,925
Income Before Income Taxes	51,397	31,492	123,993	91,558
Income taxes	12,053	8,029	29,953	23,329
Net Income	39,344	23,463	94,040	68,229
Total assets	$ 8,760,416	$ 5,950,316	$ 8,760,416	$ 5,950,316