Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 85	$ 84
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	1,980,000	1,980,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	7,351,388	7,310,138
Treasury stock at cost, common shares held	292,855	292,855