Loans Receivable - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 2,000		$ 2,000		$ 1,282
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,157		2,157		1,332
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,716		4,716		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,716		4,716		0
Impaired Financing Receivable Loans With Specific Related Allowance	472		472		0
Impaired Financing Receivable, Recorded Investment	6,716		6,716		1,282
Impaired Financing Receivable, Unpaid Principal Balance	6,873		6,873		1,332
Impaired Financing Receivable, Related Allowance	472		472		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,627	$ 1,325	1,425	$ 1,296
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	3	5	8	12
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,179	60	590	57
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	1
Impaired Financing Receivable, Average Recorded Investment	2,806	1,385	2,015	1,353
Impaired Financing Receivable, Interest Income, Accrual Method	3	5	8	13
Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	0	0	43
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	2
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,847		1,847		1,133
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,973		1,973		1,154
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,489	1,110	1,278	1,085
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1	2	4	4
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	60	0	30
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	153		153		149
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	184		184		178
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	138	215	147	168
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2	3	4	6
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	0	0	27
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	1
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,716		4,716		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,716		4,716		0
Impaired Financing Receivable Loans With Specific Related Allowance	472		472		$ 0
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	1,179	0	590	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 0	$ 0	$ 0

Amount of allowance for credit losses related to recorded investment not with a specific valuation allowance.

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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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-Publisher FASB
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-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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