Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Allowance for doubtful accounts receivable - current	$ 1,490	$ 2,184
Related party accounts receivable - current	812	431
Related party prepaid expenses - current	1,864
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	20,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorizied	1,000,000,000	150,000,000
Common stock, shares issued	76,814,334	59,955,343
Common stock, shares outstanding	76,814,334	59,955,343
Other current assets
Related party receivables - current		363
Accounts payable
Related party accounts payable - current	1,307	1,161
Accrued liabilities
Related party accounts payable - current	$ 150	$ 259
Convertible preferred stock
Par value	$ 0.0001	$ 0.0001
Shares authorizied		4,500,000
Shares issued	0	2,857,143
Shares outstanding	0	2,857,143