Accumulated Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2016

Statement of Comprehensive Income [Abstract]

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

The components of accumulated other comprehensive income (loss) were as follows (in thousands):

	Foreign currency translation adjustment			Changes in fair value of derivative, net of tax			Accumulated other comprehensive income (loss)
Balance at December 31, 2013	$	324		$	(208	)	$	116
Other comprehensive income (loss)	(4,772		)	86			(4,686		)
Balance at December 31, 2014	(4,448		)	(122		)	(4,570		)
Other comprehensive income (loss)	(3,714		)	122			(3,592		)
Balance at December 31, 2015	(8,162		)	—			(8,162		)
Other comprehensive income (loss)	(1,861		)	—			(1,861		)
Balance at December 31, 2016	$	(10,023	)	$	—		$	(10,023	)