Regulatory Matters (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Tier I capital:
Total tier I capital	$ 41,356	$ 39,587
Tier II capital:
Subordinated notes	20,679	19,796
Allowable portion of allowance for loan losses	8,367	8,452
Total tier II capital	29,046	28,248
Total risk-based capital	70,402	67,835
Total risk-weighted assets	658,621	665,323
Bank
Tier I capital:
Total tier I capital	72,343	69,963
Tier II capital:
Allowable portion of allowance for loan losses	8,362	8,447
Total tier II capital	8,362	8,447
Total risk-based capital	80,705	78,410
Total risk-weighted assets	$ 658,210	$ 664,914