Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Statement Of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 84	$ 1,837
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	10,000,000
Common stock, shares issued	7,310,138	7,246,993
Treasury stock at cost, common shares held	292,855	288,681