Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current Assets:
Allowances and discounts	$ 12,783	$ 13,829
Stockholders' Equity
Common stock par value (in dollars per share)	$ 0.001	$ 0.001
Common stock shares authorized	100,000,000	50,000,000
Common stock shares issued	42,529,502	42,027,991
Common stock shares outstanding	42,529,502	42,027,991