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	$ 200	$ 311
Preferred stock, no par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, no par value
Common stock, shares authorized	37,500,000	37,500,000
Common stock, shares issued	11,065,217	10,874,050
Common stock, shares outstanding	11,065,217	10,874,050