Restructuring - Summary of Restructuring Liability (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Restructuring Reserve [Roll Forward]
Balance - Beginning of the period	$ 2,274	$ 585	$ 585
Provisions	748	273	3,500	$ 800
Utilizations	(568)	(195)
Balance - End of the period	2,454	663	2,274	585
Employee Costs
Restructuring Reserve [Roll Forward]
Balance - Beginning of the period	2,229	542	542
Provisions	607	208
Utilizations	(440)	(155)
Balance - End of the period	2,396	595	2,229	542
Facility Exit and Other Costs
Restructuring Reserve [Roll Forward]
Balance - Beginning of the period	45	43	43
Provisions	141	65
Utilizations	(128)	(40)
Balance - End of the period	$ 58	$ 68	$ 45	$ 43