Regulatory Matters (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Tier I capital:
Total tier I capital	$ 42,098	$ 39,587
Tier II capital:
Subordinated notes	21,051	19,796
Allowable portion of allowance for loan losses	8,513	8,452
Total tier II capital	29,564	28,248
Total risk-based capital	71,662	67,835
Total risk-weighted assets	670,381	665,323
Bank
Tier I capital:
Total tier I capital	73,725	69,963
Tier II capital:
Allowable portion of allowance for loan losses	8,508	8,447
Total tier II capital	8,508	8,447
Total risk-based capital	82,233	78,410
Total risk-weighted assets	$ 669,968	$ 664,914