Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Consolidated Balance Sheets
Accounts receivable, allowance for doubtful accounts	$ 152	$ 216
Convertible preferred stock, par value	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	1,000	1,000
Convertible preferred stock, shares issued	0	0
Convertible preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	11,200	11,200
Common stock, shares issued	4,809	4,754
Common stock, shares outstanding	4,809	4,754