Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance on accounts receivable	$ 561	$ 272
Preferred shares, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred shares, authorized shares (in shares)	100,000	100,000
Preferred shares, issued shares (in shares)	86,407	86,407
Preferred shares, outstanding shares (in shares)	2,576	64,809
Preferred shares liquidation preference	$ 11,783	$ 256,017
Common shares, par value (in dollars per share)	$ 0.001	$ 0.001
Common shares, authorized shares (in shares)	100,000,000	100,000,000
Common shares, issued shares (in shares)	45,032,240	44,840,576
Common shares, outstanding shares (in shares)	41,476,116	41,371,220