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

No definition available.

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- Definition

Financing Receivable, Allowance for Credit Losses, Recovery, Assets Held for Sale

+ References

No definition available.

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- Definition

Financing Receivable, Allowance for Credit Losses, Write-downs, Assets Held for Sale

+ References

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.

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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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		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Dec. 31, 2016
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	$ 39,883	$ 37,605	$ 37,315	$ 35,647
Charge-offs	(1,946)	(1,000)	(2,769)	(1,042)
Charge-offs for BankMobile loans	(202)	(140)	(222)	(140)
Recoveries	134	80	453	577
Recoveries for BankMobile loans	54	0	96	0
Provision for loan losses	535	1,552	3,585	3,055
Ending balance	38,458	38,097	38,458	38,097
Loans:
Individually evaluated for impairment					$ 31,487	$ 29,411
Collectively evaluated for impairment					6,664,979	6,080,333
Loans receivable, gross					6,725,504	6,142,314
Allowance for loan losses:
Individually evaluated for impairment					2,791	1,360
Collectively evaluated for impairment					31,238	31,144
Total Allowance for loan losses	39,883	37,605	37,315	35,647	38,458	37,315
Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					29,038	32,570
Allowance for loan losses:
Loans acquired with credit deterioration					4,429	4,811
Multi-family
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	12,283	12,135	11,602	12,016
Charge-offs	0	0	0	0
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	0	0	0	0
Recoveries for BankMobile loans	0		0
Provision for loan losses	(255)	233	426	352
Ending balance	12,028	12,368	12,028	12,368
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					3,397,645	3,212,895
Loans receivable, gross					3,399,617	3,214,999
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					12,028	11,602
Total Allowance for loan losses	12,283	12,135	11,602	12,016	12,028	11,602
Multi-family \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					1,972	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	13,009	9,959	11,050	8,864
Charge-offs	(1,849)	(537)	(2,047)	(537)
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	68	55	283	111
Recoveries for BankMobile loans	0		0
Provision for loan losses	357	893	2,299	1,932
Ending balance	11,585	10,370	11,585	10,370
Loans:
Individually evaluated for impairment					10,121	8,516
Collectively evaluated for impairment					1,051,233	967,668
Loans receivable, gross					1,062,283	977,221
Allowance for loan losses:
Individually evaluated for impairment					1,959	1,024
Collectively evaluated for impairment					9,128	9,686
Total Allowance for loan losses	13,009	9,959	11,050	8,864	11,585	11,050
Commercial and industrial \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					929	1,037
Allowance for loan losses:
Loans acquired with credit deterioration					498	340
Commercial real estate - owner occupied
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	2,394	1,410	2,183	1,348
Charge-offs	0	0	0	0
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	9	0	9	0
Recoveries for BankMobile loans	0		0
Provision for loan losses	573	172	784	234
Ending balance	2,976	1,582	2,976	1,582
Loans:
Individually evaluated for impairment					2,649	2,050
Collectively evaluated for impairment					429,279	379,353
Loans receivable, gross					443,204	393,632
Allowance for loan losses:
Individually evaluated for impairment					642	287
Collectively evaluated for impairment					2,317	1,896
Total Allowance for loan losses	2,394	1,410	2,183	1,348	2,976	2,183
Commercial real estate - owner occupied \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					11,276	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	7,847	8,548	7,894	8,420
Charge-offs	(4)	0	(408)	0
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	0	0	0	8
Recoveries for BankMobile loans	0		0
Provision for loan losses	(57)	(65)	300	55
Ending balance	7,786	8,483	7,786	8,483
Loans:
Individually evaluated for impairment					285	2,151
Collectively evaluated for impairment					1,209,987	1,185,237
Loans receivable, gross					1,216,012	1,193,715
Allowance for loan losses:
Individually evaluated for impairment					67	14
Collectively evaluated for impairment					4,673	4,626
Total Allowance for loan losses	7,847	8,548	7,894	8,420	7,786	7,894
Commercial real estate - non-owner occupied \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					5,740	6,327
Allowance for loan losses:
Loans acquired with credit deterioration					3,046	3,254
Construction
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	885	1,264	840	1,074
Charge-offs	0	0	0	0
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	49	24	130	457
Recoveries for BankMobile loans	0		0
Provision for loan losses	(218)	(79)	(254)	(322)
Ending balance	716	1,209	716	1,209
Loans:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					61,226	64,789
Loans receivable, gross					61,226	64,789
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					716	772
Total Allowance for loan losses	885	1,264	840	1,074	716	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	3,080	3,676	3,342	3,298
Charge-offs	(69)	(413)	(290)	(413)
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	6	1	27	1
Recoveries for BankMobile loans	0		0
Provision for loan losses	(22)	271	(84)	649
Ending balance	2,995	3,535	2,995	3,535
Loans:
Individually evaluated for impairment					8,002	6,972
Collectively evaluated for impairment					430,413	178,963
Loans receivable, gross					444,453	193,502
Allowance for loan losses:
Individually evaluated for impairment					118	35
Collectively evaluated for impairment					2,245	2,414
Total Allowance for loan losses	3,080	3,676	3,342	3,298	2,995	3,342
Residential real estate \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					6,038	7,567
Allowance for loan losses:
Loans acquired with credit deterioration					632	893
Manufactured housing
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	284	468	286	494
Charge-offs	0	0	0	0
Charge-offs for BankMobile loans	0	0	0	0
Recoveries	0	0	0	0
Recoveries for BankMobile loans	0		0
Provision for loan losses	(16)	(28)	(18)	(54)
Ending balance	268	440	268	440
Loans:
Individually evaluated for impairment					10,374	9,665
Collectively evaluated for impairment					82,914	88,995
Loans receivable, gross					96,148	101,730
Allowance for loan losses:
Individually evaluated for impairment					5	0
Collectively evaluated for impairment					83	88
Total Allowance for loan losses	284	468	286	494	268	286
Manufactured housing \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					2,860	3,070
Allowance for loan losses:
Loans acquired with credit deterioration					180	198
Other
Allowance for Loan and Lease Losses [Roll Forward]
Beginning balance	101	145	118	133
Charge-offs	(24)	(50)	(24)	(92)
Charge-offs for BankMobile loans	(202)	(140)	(222)	(140)
Recoveries	2	0	4	0
Recoveries for BankMobile loans	54		96
Provision for loan losses	173	155	132	209
Ending balance	104	110	104	110
Loans:
Individually evaluated for impairment					56	57
Collectively evaluated for impairment					2,282	2,433
Loans receivable, gross					2,561	2,726
Allowance for loan losses:
Individually evaluated for impairment					0	0
Collectively evaluated for impairment					48	60
Total Allowance for loan losses	$ 101	$ 145	$ 118	$ 133	104	118
Other \| Purchased Credit Impaired Loans
Loans:
Loans acquired with credit deterioration					223	236
Allowance for loan losses:
Loans acquired with credit deterioration					$ 56	$ 58