Goodwill - Narrative (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2015	Sep. 30, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment charge	$ 37,500,000		$ 37,539,000
Income tax benefit on impairment of goodwill			0
Foreign exchange impact			(3,152,000)	$ (4,806,000)
Goodwill impairment		$ 37,900,000	$ 37,539,000	$ 0	$ 37,908,000