Fair Value of Financial Instruments (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Dec. 31, 2012
Fair Value of Financial Instruments
Prepayments of principal amount of loans assumed	$ 0
Financial assets:
Cash and cash equivalents	32,612	39,843	51,611	25,340
Certificates of deposits in other banks	9,427	9,427
Securities available-for-sale	104,592	106,411
Securities held-to-maturity	55,741	54,118
Financial liabilities:
FHLB and other borrowings	60,480	104,647
Carrying Value
Financial assets:
Cash and cash equivalents	32,612	39,843
Certificates of deposits in other banks	9,427	9,427
Securities available-for-sale	104,592	106,411
Securities held-to-maturity	56,823	56,670
Loans held for sale	50,201	89,186
Loans, net	670,107	617,370
Derivative on loans held for sale	2,607	2,271
Accrued interest receivable	2,715	2,764
Financial liabilities:
Deposits	754,640	695,811
Repurchase agreements	71,498	81,578
FHLB and other borrowings	60,480	104,647
Accrued interest payable	294	327
Subordinated debt	4,124	4,124
Estimated Fair Value
Financial assets:
Cash and cash equivalents	32,612	39,843
Certificates of deposits in other banks	10,013	9,616
Securities available-for-sale	104,592	106,411
Securities held-to-maturity	55,741	54,118
Loans held for sale	50,201	89,186
Loans, net	675,767	620,295
Derivative on loans held for sale	2,607	2,271
Accrued interest receivable	2,715	2,764
Financial liabilities:
Deposits	755,359	697,301
Repurchase agreements	71,498	81,578
FHLB and other borrowings	60,520	104,742
Accrued interest payable	294	327
Subordinated debt	4,124	4,124
Estimated Fair Value | Quoted Prices in Active Markets For Identical Assets (Level 1)
Financial assets:
Cash and cash equivalents	32,612	39,843
Securities available-for-sale	187	187
Estimated Fair Value | Significant Other Observable Inputs (Level 2)
Financial assets:
Securities available-for-sale	104,405	106,224
Securities held-to-maturity	55,741	54,118
Loans held for sale	50,201	89,186
Derivative on loans held for sale	2,607	2,271
Accrued interest receivable	2,715	2,764
Financial liabilities:
Deposits	508,509	454,658
Repurchase agreements	71,498	81,578
FHLB and other borrowings	53,900	98,028
Accrued interest payable	294	327
Subordinated debt	4,124	4,124
Estimated Fair Value | Significant Unobservable Inputs (Level 3)
Financial assets:
Certificates of deposits in other banks	10,013	9,616
Loans, net	675,767	620,295
Financial liabilities:
Deposits	246,850	242,643
FHLB and other borrowings	$ 6,620	$ 6,714