Loans Receivable - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 1,273		$ 1,282
Impaired Financing Receivable, Unpaid Principal Balance	1,273		1,332
Impaired Financing Receivable, Related Allowance	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,223	$ 1,266
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	5	7
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	53
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	1
Impaired Financing Receivable, Average Recorded Investment	1,223	1,319
Impaired Financing Receivable, Interest Income, Accrual Method	5	8
Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	85
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	2
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	1,121		1,133
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	1,121		1,154
Impaired Financing Receivable Loans With Specific Related Allowance	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,068	1,060
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	3	2
Other consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	152		149
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	152		178
Impaired Financing Receivable Loans With Specific Related Allowance	0		$ 0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	155	121
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2	3
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	53
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 1

Amount of allowance for credit losses related to recorded investment with specific valuation allowance.

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- Definition

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+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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- Definition

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.

+ References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

+ References

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- Definition

Amount of average investment of impaired financing receivables for which there is no related allowance for credit losses.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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- Definition

Amount of interest income, recognized on accrual basis, on financing receivables that are recognized as impaired, for which there is no related allowance for credit losses.

+ References

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- Definition

Amount of average investment of impaired financing receivables for which there is a related allowance for credit losses.

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Amount of interest income, recognized on accrual basis, on financing receivables, for which there is a related allowance for credit losses and are recognized as impaired.

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- Definition

Amount of investment in impaired financing receivables for which there is a related allowance for credit losses.

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- Definition

Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

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