Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts receivable	$ 263	$ 200
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	11,203,707	11,065,217
Common stock, shares outstanding	11,203,707	11,065,217