Consolidated Balance Sheets (unaudited) (Parenthetical) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Shareholders' Equity
Common stock, par value (in dollars per share)
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	14,508,275	14,217,303
Common stock, shares outstanding (in shares)	14,508,275	14,217,303