Loans - Individually Evaluated For Impairment By Class Of Loans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Total impaired loans	$ 10,799		$ 11,792
Impaired Financing Receivable, Recorded Investment, Total	8,971		9,854
Impaired Financing Receivable Allocated Loans and Leases	842		830
Impaired Financing Receivable, Average Recorded Investment, Total	9,480	10,804
Impaired Financing Receivable, Interest Income, Accrual Method, Total	54	94
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,314		4,460
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,269		4,415
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	842		830
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	4,301	4,338
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	54	83
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	6,485		7,332
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	4,702		5,439
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	5,179	6,466
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		11
Non-owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	2,225		2,239
Impaired Financing Receivable, with Related Allowance, Recorded Investment	2,225		2,239
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	132		105
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	2,230	2,340
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	34	57
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,222		3,000
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,527		2,195
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,928	1,367
Owner occupied [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	392		396
Impaired Financing Receivable, with Related Allowance, Recorded Investment	392		396
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	7		7
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	393	736
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	6	6
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,155		2,195
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,204		1,244
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,219	429
Land [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	425		438
Impaired Financing Receivable, with Related Allowance, Recorded Investment	380		393
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	13		14
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	386	384
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	6	6
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		224
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		1
Originated for portfolio [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		135
Commercial Segment [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	867		970
Impaired Financing Receivable, with Related Allowance, Recorded Investment	868		970
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	562		609
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	884	696
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	5	13
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	136		136
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	120		121
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	172	67
Multi-family residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	277		288
Impaired Financing Receivable, with Related Allowance, Recorded Investment	276		288
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	84		24
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	280	92
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	1	1
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,972		2,001
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	1,851		1,879
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,860	4,244
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment		10
Single-family residential [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	128		129
Impaired Financing Receivable, with Related Allowance, Recorded Investment	128		129
Impaired Financing Receivable with Related Allowance, Allocated Loans and Leases	44		71
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	128	90
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	$ 2