Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Mar. 31, 2017	Dec. 31, 2016
Condensed Consolidated Balance Sheets
Common Stock, Par or Stated Value (USD per share)	$ 0.0001	$ 0.0001
Common Stock, Shares Authorized	100,000	100,000
Common Stock, Shares, Issued	21,786	21,407
Common Stock, Shares, Outstanding	20,131	19,763
Treasury Stock, Shares	1,655	1,644