Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 775	$ 940
Preferred stock, par value
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding
Common stock, par value
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	6,969,772	6,933,029
Common stock, shares outstanding	6,969,772	6,933,029