Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2018

Stockholders' Equity Attributable to Parent [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The components of accumulated other comprehensive income ("AOCI"), net of tax, were as follows (in thousands):

	Foreign Currency Translation Adjustments			Unrealized Gains on Cash Flow Hedges			Other Adjustments			Total
Balance as of December 31, 2017	$	(14,578	)	$	(365	)	$	(16	)	$	(14,959	)
Other comprehensive income before reclassifications	15,397			1,993			2			17,392
Amounts reclassified from AOCI	—			(179		)	—			(179		)
Other comprehensive income	15,397			1,814			2			17,213
Balance as of March 31, 2018	$	819		$	1,449		$	(14	)	$	2,254