Condensed Consolidated Statement of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net income (loss)	$ (4,634)	$ (7,554)	$ (11,079)	$ (17,562)
Other comprehensive income (loss):
Translation adjustments	(1,152)	346	(993)	1,010
Net adjustment for fair value of hedge derivatives (A)	(301)	(71)	(633)	431
Other comprehensive income (loss)	(1,453)	275	(1,626)	1,441
Comprehensive income (loss)	$ (6,087)	$ (7,279)	$ (12,705)	$ (16,121)