Allowance for Loan Losses, Nonperforming Assets and Impaired Loans, Financing Receivables Past Due (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	$ 4,295	$ 4,090
90 or More Days Past Due	4,445	3,755
90 or More Days Past Due and Still Accruing	568	170	210
Nonaccruals (Including Impaired Nonaccruals)	12,425	13,021	5,328
Real Estate Construction [Member] | Construction, Residential [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	0	0
90 or More Days Past Due	123	123
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	123	123
Real Estate Construction [Member] | Construction, Other [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	30	31
90 or More Days Past Due	0	89
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	2,869	3,109
Consumer Real Estate [Member] | Equity Lines [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	22	22
90 or More Days Past Due	49	30
90 or More Days Past Due and Still Accruing	49	30
Nonaccruals (Including Impaired Nonaccruals)	0	98
Consumer Real Estate [Member] | Residential Closed end First Liens [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	1,236	1,507
90 or More Days Past Due	731	605
90 or More Days Past Due and Still Accruing	414	126
Nonaccruals (Including Impaired Nonaccruals)	626	801
Consumer Real Estate [Member] | Residential Closed end Junior Liens [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	336	121
90 or More Days Past Due	170	39
90 or More Days Past Due and Still Accruing	51	0
Nonaccruals (Including Impaired Nonaccruals)	119	120
Consumer Real Estate [Member] | Investor-owned residential real estate [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	196
90 or More Days Past Due	0
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	3
Commercial Real Estate [Member] | Multifamily Real Estate [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	943	671
90 or More Days Past Due	254	261
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	4,421	4,624
Commercial Real Estate [Member] | Commercial Real Estate, Owner Occupied [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	670	1,113
90 or More Days Past Due	2,806	0
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	3,810	3,536
Commercial Real Estate [Member] | Commercial Real Estate, Other [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	256	40
90 or More Days Past Due	0	2,089
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	0	0
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	265	291
90 or More Days Past Due	258	505
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	411	561
Public Sector and IDA [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	0	0
90 or More Days Past Due	0	0
90 or More Days Past Due and Still Accruing	0	0
Nonaccruals (Including Impaired Nonaccruals)	0	0
Consumer Non Real Estate [Member] | Credit Cards [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	24	20
90 or More Days Past Due	6	4
90 or More Days Past Due and Still Accruing	6	4
Nonaccruals (Including Impaired Nonaccruals)	0	0
Consumer Non Real Estate [Member] | Automobile [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	185	142
90 or More Days Past Due	42	10
90 or More Days Past Due and Still Accruing	42	10
Nonaccruals (Including Impaired Nonaccruals)	43	49
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	132	132
90 or More Days Past Due	6	0
90 or More Days Past Due and Still Accruing	6	0
Nonaccruals (Including Impaired Nonaccruals)	$ 0	$ 0