Loans Receivable - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	$ 1,279		$ 1,279		$ 1,494
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,383		1,383		1,571
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	60		60		37
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	60		60		51
Impaired Financing Receivable Loans With Specific Related Allowance	14		14		15
Impaired Financing Receivable, Recorded Investment	1,339		1,339		1,531
Impaired Financing Receivable, Unpaid Principal Balance	1,443		1,443		1,622
Impaired Financing Receivable, Related Allowance	14		14		15
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,325	$ 2,390	1,296	$ 2,605
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	5	20	12	31
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	60	67	57	84
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	1	1	1
Impaired Financing Receivable, Average Recorded Investment	1,385	2,457	1,353	2,689
Impaired Financing Receivable, Interest Income, Accrual Method	5	21	13	32
Investor commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0		0		87
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0		87
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0	1,049	43	1,050
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	3	2	3
Owner-occupied commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	60		60		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	60		60		0
Impaired Financing Receivable Loans With Specific Related Allowance	14		14		0
Residential mortgage
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,109		1,109		1,139
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,116		1,116		1,146
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,110	1,107	1,085	1,290
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	2	5	4	11
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	60	13	30	18
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	170		170		268
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	267		267		338
Impaired Financing Receivable Loans With No Specific Related Allowance	0		0		0
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0		0		37
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0		51
Impaired Financing Receivable Loans With Specific Related Allowance	0		0		$ 15
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	215	234	168	265
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	3	12	6	17
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0	54	27	66
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 0	$ 1	$ 1	$ 1