Notes Payable and Capital Leases Payable - Components of Company's Notes Payable and Borrowings under Capital Leases Balances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Term loans	$ 462,938		$ 499,563
Deferred loan costs	(4,018)		(5,781)
Capital leases	134		153
Less: current portion	(36,559)		(32,970)
Non-current term portion	422,495		460,965
First lien credit facility | Tranche A term loans
Line of Credit Facility [Line Items]
Term loans	$ 330,469		351,563
Annual Contractual Interest Rate	3.25%
Effective Interest Rate	3.46%
First lien credit facility | Tranche B term loans
Line of Credit Facility [Line Items]
Term loans	$ 0		148,000
Annual Contractual Interest Rate		3.22%
Loans Payable | Tranche A-2 Term Loans
Line of Credit Facility [Line Items]
Term loans	$ 132,469		$ 0
Annual Contractual Interest Rate	3.125%
Effective Interest Rate	3.29%
LIBOR | First lien credit facility | Tranche A term loans
Line of Credit Facility [Line Items]
Margin for term loans	2.25%
LIBOR | Loans Payable | Tranche A-2 Term Loans
Line of Credit Facility [Line Items]
Margin for term loans	2.125%
Prime lending rate | First lien credit facility | Tranche A term loans
Line of Credit Facility [Line Items]
Margin for term loans	1.25%
Prime lending rate | Loans Payable | Tranche A-2 Term Loans
Line of Credit Facility [Line Items]
Margin for term loans	1.125%