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Loans Receivable and Allowance for Loan Losses (Impaired Loans and Related Interest Income by Loan Portfolio Class) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 2,601		$ 2,624
Impaired Financing Receivable, Recorded Investment	2,601		2,624
Unpaid Principal Balance, With no related allowance recorded	3,487		3,455
Unpaid Principal Balance, Total	3,487		3,455
Associated Allowance	0		0
Average Recorded Investment, Total	2,642	$ 8,804
Interest Income Recognized, Total	22	33
Residential Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	83		23
Impaired Financing Receivable, Recorded Investment	83		23
Unpaid Principal Balance, With no related allowance recorded	88		28
Unpaid Principal Balance, Total	88		28
Associated Allowance	0		0
Average Recorded Investment, Total	83	164
Interest Income Recognized, Total	0	1
Commercial Real Estate Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,518		2,601
Impaired Financing Receivable, Recorded Investment	2,518		2,601
Unpaid Principal Balance, With no related allowance recorded	3,399		3,427
Unpaid Principal Balance, Total	3,399		3,427
Associated Allowance	0		$ 0
Average Recorded Investment, Total	2,559	8,640
Interest Income Recognized, Total	$ 22	$ 32

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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.

+ 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=66008989&loc=d3e5212-111524

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Amount of interest income recognized on a cash-basis method of accounting 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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-Publisher FASB
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-Section 50
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-Publisher FASB
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