Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Level 1
Financial assets:
Cash and cash equivalents	$ 39,127	$ 138,396
Investment securities	3,036	133
Loans and loans held-for-sale, net	0	0
Accrued interest receivable	0	0
Federal Home Loan Bank stock	0	0
Financial liabilities:
Demand deposits, NOW, savings and money market accounts	0	0
Time deposits	0	0
Borrowed funds	0	0
Junior subordinated debt	0
Accrued interest payable	0	0
Level 1 | Forward Sales Commitments
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Interest Rate Swap Agreements
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 1 | Interest Rate Lock Commitments
Financial assets:
Derivative assets	0	0
Level 2
Financial assets:
Cash and cash equivalents	0	0
Investment securities	325,654	342,987
Loans and loans held-for-sale, net	0	0
Accrued interest receivable	2,030	1,760
Federal Home Loan Bank stock	5,273	4,154
Financial liabilities:
Demand deposits, NOW, savings and money market accounts	921,385	898,372
Time deposits	551,759	742,552
Borrowed funds	96,464	105,926
Junior subordinated debt	5,758
Accrued interest payable	927	1,629
Level 2 | Forward Sales Commitments
Financial assets:
Derivative assets	260
Financial liabilities:
Derivative liabilities		481
Level 2 | Interest Rate Swap Agreements
Financial assets:
Derivative assets	0	0
Financial liabilities:
Derivative liabilities	0	0
Level 2 | Interest Rate Lock Commitments
Financial assets:
Derivative assets	0	0
Level 3
Financial assets:
Cash and cash equivalents	0	0
Investment securities	0	0
Loans and loans held-for-sale, net	1,194,418	1,187,663
Accrued interest receivable	4,309	4,616
Federal Home Loan Bank stock	0	0
Financial liabilities:
Demand deposits, NOW, savings and money market accounts	0	0
Time deposits	0	0
Borrowed funds	0	0
Junior subordinated debt	0
Accrued interest payable	0	0
Level 3 | Forward Sales Commitments
Financial liabilities:
Derivative liabilities	0	0
Level 3 | Interest Rate Swap Agreements
Financial assets:
Derivative assets	146	196
Financial liabilities:
Derivative liabilities	146	196
Level 3 | Interest Rate Lock Commitments
Financial assets:
Derivative assets	484	873
Carrying Amount
Financial assets:
Cash and cash equivalents	39,127	138,396
Investment securities	328,690	343,120
Loans and loans held-for-sale, net	1,325,055	1,312,034
Accrued interest receivable	6,339	6,376
Federal Home Loan Bank stock	5,273	4,154
Financial liabilities:
Demand deposits, NOW, savings and money market accounts	943,453	898,372
Time deposits	547,883	733,290
Borrowed funds	96,021	105,136
Junior subordinated debt	35,059
Accrued interest payable	927	1,629
Carrying Amount | Forward Sales Commitments
Financial liabilities:
Derivative liabilities	260	481
Carrying Amount | Interest Rate Swap Agreements
Financial assets:
Derivative assets	146	196
Financial liabilities:
Derivative liabilities	146	196
Carrying Amount | Interest Rate Lock Commitments
Financial assets:
Derivative assets	484	873
Estimated Fair Value
Financial assets:
Cash and cash equivalents	39,127	138,396
Investment securities	328,690	343,120
Loans and loans held-for-sale, net	1,194,418	1,187,663
Accrued interest receivable	6,339	6,376
Federal Home Loan Bank stock	5,273	4,154
Financial liabilities:
Demand deposits, NOW, savings and money market accounts	921,385	898,372
Time deposits	551,759	742,552
Borrowed funds	96,464	105,926
Junior subordinated debt	5,758
Accrued interest payable	927	1,629
Estimated Fair Value | Forward Sales Commitments
Financial liabilities:
Derivative liabilities	260	481
Estimated Fair Value | Interest Rate Swap Agreements
Financial assets:
Derivative assets	146	196
Financial liabilities:
Derivative liabilities	146	196
Estimated Fair Value | Interest Rate Lock Commitments
Financial assets:
Derivative assets	$ 484	$ 873