Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Accounts receivable, allowances	$ 421	$ 421
Preferred Stock, Par or Stated Value Per Share (usd per share)	$ 0.0001	$ 0.0001
Preferred Stock, Shares Authorized (shares)	5,000,000	5,000,000
Preferred Stock, Shares Issued (shares)	0	0
Preferred Stock, Shares Outstanding (shares)	0	0
Preferred Stock, Shares Outstanding (usd per share)	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized (shares)	100,000,000	100,000,000
Common Stock, Shares, Issued (shares)	41,218,000	40,343,000
Common Stock, Shares, Outstanding (shares)	41,218,000	40,343,000