Loans and Leases - Aging Analysis of Past Due Payments for Each Loan Portfolio Segment (Details) (USD $)	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012	Dec. 31, 2012
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	$ 2,996,000			$ 2,635,000
60-89 Days Past Due	1,711,000			1,988,000
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	16,084,000			21,432,000
Current	337,264,000			318,627,000
Subtotal LHFI	358,055,000		400,675,000	344,682,000
Less: Deferred loan fees	0	[1]		(517,000)	[1]
Total loans and leases	358,055,000			344,165,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	16,084,000			21,432,000
Total non-accrual LHFI, Specific reserves	155,000			2,026,000
Non-accrual loans held for sale [Abstract]
Total non-accrual LHFS, Loan balance	1,472,000			1,572,000
Non accrual loans held for sale, Specific reserves	0			0
Total non-accrual loans, Loan balance	17,556,000			23,004,000
Total non accrual loans, Specific reserves	155,000			2,026,000
Period decrease in nonaccrual loans	5,400,000
Reduction in existing non accrual loan balances	3,500,000
Addition of non accrual loan balance	241,000
Change in the non accrual loans [Abstract]
Charge-offs to the allowance for loan and lease losses	1,985,000		153,000
Interest income lost on non-accrual loans	526,000
Cash collected on non accrual and impaired loan	4,400,000		6,100,000
Amount credited to principal balance outstanding	4,200,000		6,000,000
Summary of impaired loans [Abstract]
Impaired loans with valuation allowance	3,404,000			9,405,000
Impaired loans without valuation allowance	19,349,000			19,423,000
Impaired LHFS	1,472,000			1,572,000
Total impaired loans and leases	24,225,000			30,400,000
Valuation allowance related to impaired loans	155,000			2,026,000
Non-accrual Loans Held For Investment [Member]
Non-accrual loans held for investment [Abstract]
Non-accrual loans transfer to other real estate owned	100,000
Change in the non accrual loans [Abstract]
Charge-offs to the allowance for loan and lease losses	2,000,000
Non accrual Loans Held For Sale [Member]
Non-accrual loans held for sale [Abstract]
Impairment of loans held for sale	100,000
Commercial Real Estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	1,032,000			1,548,000
60-89 Days Past Due	1,486,000			1,486,000
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	7,879,000			10,345,000
Current	165,000,000			153,736,000
Subtotal LHFI				167,115,000
Total loans and leases	175,397,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	7,879,000			10,345,000
Total non-accrual LHFI, Specific reserves	0			835,000
Non-accrual loans held for sale [Abstract]
Total non-accrual LHFS, Loan balance	1,472,000			1,572,000
Non accrual loans held for sale, Specific reserves	0			0
Construction and Land Development [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	0			0
60-89 Days Past Due	0			0
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	3,042,000			4,280,000
Current	31,491,000			32,935,000
Subtotal LHFI	34,533,000			37,215,000
Total loans and leases	34,533,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	3,042,000			4,280,000
Total non-accrual LHFI, Specific reserves	0			820,000
Commercial and Industrial [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	297,000			200,000
60-89 Days Past Due	46,000			0
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	4,023,000			4,961,000
Current	63,146,000			35,399,000
Subtotal LHFI				40,560,000
Total loans and leases	67,512,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	4,023,000			4,961,000
Total non-accrual LHFI, Specific reserves	45,000			255,000
Residential real estate [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	1,434,000			562,000
60-89 Days Past Due	121,000			486,000
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	432,000			994,000
Current	4,710,000			22,939,000
Subtotal LHFI				24,981,000
Total loans and leases	6,697,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	432,000			994,000
Total non-accrual LHFI, Specific reserves	13,000			14,000
Multi Family [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	0			0
60-89 Days Past Due	0			0
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	0			0
Current	11,830,000			11,756,000
Subtotal LHFI	11,830,000			11,756,000
Total loans and leases	11,830,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	0			0
Total non-accrual LHFI, Specific reserves	0			0
Leases [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	233,000			325,000
60-89 Days Past Due	58,000			16,000
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	157,000			251,000
Current	38,181,000			36,755,000
Subtotal LHFI	38,629,000			37,347,000
Total loans and leases	38,629,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	157,000			251,000
Total non-accrual LHFI, Specific reserves	70,000			55,000
Tax Certificates [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	0			0
60-89 Days Past Due	0			0
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	551,000			601,000
Current	21,990,000			23,968,000
Subtotal LHFI	22,541,000			24,569,000
Total loans and leases	22,541,000
Non-accrual loans held for investment [Abstract]
Total non-accrual LHFI, loan balance	551,000			601,000
Total non-accrual LHFI, Specific reserves	27,000			47,000
Consumer [Member]
Aging analysis of past due payments for each loan portfolio segment [Abstract]
30-59 Days Past Due	0			0
60-89 Days Past Due	0			0
Accruing 90+Days	0			0
Total non-accrual LHFI, loan balance	0			0
Current	916,000			1,139,000
Subtotal LHFI	916,000			1,139,000
Total loans and leases	$ 916,000

[1] For the 2013 period net deferred fees were allocated among the loan types.