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Loans and Leases Receivable and Allowance for Credit Losses on Loans and Leases - Schedule of Allowance for Credit Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 128,736	$ 149,283	$ 144,176	$ 56,379
Charge-offs	(7,961)	(11,125)	(22,606)	(30,265)
Recoveries	1,370	801	3,494	1,230
Provision for credit losses on loans and leases	3,291	20,946	372	52,732
Ending balance	125,436	159,905	125,436	159,905
Multi-family
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	8,026	8,750	12,620	6,157
Charge-offs	0	0	(1,132)	0
Recoveries	0	0	0	0
Provision for credit losses on loans and leases	(2,998)	5,947	(6,460)	6,369
Ending balance	5,028	14,697	5,028	14,697
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	7,503	18,806	12,239	15,556
Charge-offs	(2)	(20)	(637)	(117)
Recoveries	285	25	545	79
Provision for credit losses on loans and leases	341	(6,509)	(4,020)	(3,975)
Ending balance	8,127	12,302	8,127	12,302
Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	5,935	8,527	9,512	2,235
Charge-offs	(1)	0	(142)	0
Recoveries	2	2	9	5
Provision for credit losses on loans and leases	(1,472)	2,876	(4,915)	3,392
Ending balance	4,464	11,405	4,464	11,405
Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11,621	18,530	19,452	6,243
Charge-offs	0	(2,801)	0	(15,598)
Recoveries	59	0	69	0
Provision for credit losses on loans and leases	(4,306)	10,764	(12,147)	27,930
Ending balance	7,374	26,493	7,374	26,493
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,103	1,934	5,871	1,262
Charge-offs	0	0	0	0
Recoveries	114	113	119	116
Provision for credit losses on loans and leases	(1,574)	3,250	(3,347)	4,017
Ending balance	2,643	5,297	2,643	5,297
Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,209	4,180	3,977	3,218
Charge-offs	0	0	(50)	0
Recoveries	12	26	22	55
Provision for credit losses on loans and leases	(922)	344	(1,650)	(241)
Ending balance	2,299	4,550	2,299	4,550
Manufactured housing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,800	4,987	5,190	1,060
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for credit losses on loans and leases	(428)	1,027	(818)	1,152
Ending balance	4,372	6,014	4,372	6,014
Installment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	83,539	83,569	75,315	20,648
Charge-offs	(7,958)	(8,304)	(20,645)	(14,550)
Recoveries	898	635	2,730	975
Provision for credit losses on loans and leases	14,650	3,247	33,729	14,088
Ending balance	$ 91,129	$ 79,147	$ 91,129	79,147
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				79,829
Cumulative Effect, Period of Adoption, Adjustment | Multi-family
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				2,171
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				759
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				5,773
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				7,918
Cumulative Effect, Period of Adoption, Adjustment | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				(98)
Cumulative Effect, Period of Adoption, Adjustment | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				1,518
Cumulative Effect, Period of Adoption, Adjustment | Manufactured housing
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				3,802
Cumulative Effect, Period of Adoption, Adjustment | Installment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance				$ 57,986

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable.

+ References

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