Long-Term Debt and Credit Facility - First Lien Credit Facility (Details) - USD ($) $ in Thousands		3 Months Ended
	Aug. 17, 2015	Mar. 31, 2016	Mar. 31, 2015
Long-term Debt
Interest expense related to amortization of deferred financing costs and discount		$ 482	$ 158
First Lien Credit Facility
Long-term Debt
Maximum net leverage ratio	7.00
Term Loan | First Lien Credit Facility
Long-term Debt
Maximum borrowing capacity	$ 435,000
Term Loan | Eurodollar rate | First Lien Credit Facility
Long-term Debt
Interest rate floor (as a percent)	1.00%
Applicable margin over reference rate (as a percent)	4.50%
Term Loan | Base rate | First Lien Credit Facility
Long-term Debt
Applicable margin over reference rate (as a percent)	3.50%
Revolving Credit Facility | First Lien Credit Facility
Long-term Debt
Maximum borrowing capacity	$ 40,000
Fronting fee for letters of credit (as a percent)	0.125%	0.125%
Amount drawn to trigger net leverage requirement (as a percent)	50.00%
Letters of credit outstanding		$ 100
Amount outstanding		$ 0
Revolving Credit Facility | First Lien Credit Facility | Minimum
Long-term Debt
Unused commitment fee (as a percent)	0.375%
Revolving Credit Facility | First Lien Credit Facility | Maximum
Long-term Debt
Unused commitment fee (as a percent)	0.50%