Allowance for Loan and Lease Losses, Adjustments, Net [Abstract] [Roll Forward]

No definition available.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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- References

No definition available.

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- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

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- Definition

The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment.

+ References

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- Definition

Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment.

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- Definition

Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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- Definition

Amount of direct write-downs of financing receivables charged against the allowance.

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

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- Definition

The balance of financing receivables that were individually evaluated for impairment.

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.7(d))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB Topic 6.L.1)
-URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74567-122707

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (b)(1)(ii)
-URI http://asc.fasb.org/extlink&oid=82894903&loc=d3e15032-111544

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522

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- Definition

Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

+ References

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Loans Receivable and Allowance for Loan Losses - Schedule of Allowance for Loan Losses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 38,458	$ 38,097	$ 37,315	$ 35,647
Charge-offs	(2,585)	(666)	(5,576)	(1,848)
Recoveries	89	378	638	955
Provision for loan losses	2,352	88	5,937	3,143
Ending balance	38,314	37,897	38,314	37,897
Loans:
Individually evaluated for impairment					$ 42,201	$ 29,411
Collectively evaluated for impairment					6,993,984	6,092,580
Loans receivable, gross					7,063,775	6,154,561
Allowance for loan losses:
Individually evaluated for impairment					1,527	1,360
Collectively evaluated for impairment					32,616	31,144
Total Allowance for loan losses	38,458	38,097	37,315	35,647	38,314	37,315
Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					27,590	32,570
Allowance for loan losses:
Loans acquired with credit deterioration					4,171	4,811
Multi-family
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,028	12,368	11,602	12,016
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	668	(695)	1,094	(343)
Ending balance	12,696	11,673	12,696	11,673
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					3,617,062	3,212,895
Loans receivable, gross					3,618,989	3,214,999
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					12,696	11,602
Total Allowance for loan losses	12,028	12,368	11,602	12,016	12,696	11,602
Multi-family \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					1,927	2,104
Allowance for loan losses:
Loans acquired with credit deterioration					0	0
Commercial and industrial
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	11,585	10,370	11,050	8,864
Charge-offs	(2,032)	(237)	(4,079)	(774)
Recoveries	54	62	337	173
Provision for loan losses	966	832	3,265	2,764
Ending balance	10,573	11,027	10,573	11,027
Loans:
Individually evaluated for impairment					20,493	8,516
Collectively evaluated for impairment					1,093,927	979,158
Loans receivable, gross					1,115,222	988,711
Allowance for loan losses:
Individually evaluated for impairment					625	1,024
Collectively evaluated for impairment					9,462	9,686
Total Allowance for loan losses	11,585	10,370	11,050	8,864	10,573	11,050
Commercial and industrial \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					802	1,037
Allowance for loan losses:
Loans acquired with credit deterioration					486	340
Commercial real estate - owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,976	1,582	2,183	1,348
Charge-offs	0	0	0	0
Recoveries	0	0	9	0
Provision for loan losses	262	305	1,046	539
Ending balance	3,238	1,887	3,238	1,887
Loans:
Individually evaluated for impairment					2,950	2,050
Collectively evaluated for impairment					472,831	379,353
Loans receivable, gross					486,567	393,632
Allowance for loan losses:
Individually evaluated for impairment					740	287
Collectively evaluated for impairment					2,481	1,896
Total Allowance for loan losses	2,976	1,582	2,183	1,348	3,238	2,183
Commercial real estate - owner occupied \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					10,786	12,229
Allowance for loan losses:
Loans acquired with credit deterioration					17	0
Commercial real estate - non-owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	7,786	8,483	7,894	8,420
Charge-offs	(77)	(140)	(485)	(140)
Recoveries	0	0	0	8
Provision for loan losses	(53)	3	247	58
Ending balance	7,656	8,346	7,656	8,346
Loans:
Individually evaluated for impairment					184	2,151
Collectively evaluated for impairment					1,232,212	1,185,237
Loans receivable, gross					1,237,849	1,193,715
Allowance for loan losses:
Individually evaluated for impairment					0	14
Collectively evaluated for impairment					4,732	4,626
Total Allowance for loan losses	7,786	8,483	7,894	8,420	7,656	7,894
Commercial real estate - non-owner occupied \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					5,453	6,327
Allowance for loan losses:
Loans acquired with credit deterioration					2,924	3,254
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	716	1,209	840	1,074
Charge-offs	0	0	0	0
Recoveries	27	8	157	465
Provision for loan losses	104	(168)	(150)	(490)
Ending balance	847	1,049	847	1,049
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					73,203	64,789
Loans receivable, gross					73,203	64,789
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					847	772
Total Allowance for loan losses	716	1,209	840	1,074	847	840
Construction \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					0	0
Allowance for loan losses:
Loans acquired with credit deterioration					0	68
Residential real estate
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,995	3,535	3,342	3,298
Charge-offs	(120)	(43)	(410)	(456)
Recoveries	7	298	34	299
Provision for loan losses	72	(411)	(12)	238
Ending balance	2,954	3,379	2,954	3,379
Loans:
Individually evaluated for impairment					8,178	6,972
Collectively evaluated for impairment					421,249	178,963
Loans receivable, gross					435,188	193,502
Allowance for loan losses:
Individually evaluated for impairment					142	35
Collectively evaluated for impairment					2,222	2,414
Total Allowance for loan losses	2,995	3,535	3,342	3,298	2,954	3,342
Residential real estate \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					5,761	7,567
Allowance for loan losses:
Loans acquired with credit deterioration					590	893
Manufactured housing
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	268	440	286	494
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision for loan losses	(77)	(18)	(95)	(72)
Ending balance	191	422	191	422
Loans:
Individually evaluated for impairment					10,340	9,665
Collectively evaluated for impairment					79,957	88,995
Loans receivable, gross					92,938	101,730
Allowance for loan losses:
Individually evaluated for impairment					5	0
Collectively evaluated for impairment					83	88
Total Allowance for loan losses	268	440	286	494	191	286
Manufactured housing \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					2,641	3,070
Allowance for loan losses:
Loans acquired with credit deterioration					103	198
Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	104	110	118	133
Charge-offs	(356)	(246)	(602)	(478)
Recoveries	1	10	101	10
Provision for loan losses	410	240	542	449
Ending balance	159	114	159	114
Loans:
Individually evaluated for impairment					56	57
Collectively evaluated for impairment					3,543	3,190
Loans receivable, gross					3,819	3,483
Allowance for loan losses:
Individually evaluated for impairment					15	0
Collectively evaluated for impairment					93	60
Total Allowance for loan losses	$ 104	$ 110	$ 118	$ 133	159	118
Other \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					220	236
Allowance for loan losses:
Loans acquired with credit deterioration					$ 51	$ 58