Long-Term Debt and Revolving Lines of Credit - Long Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total	$ 847,875	$ 201,250
Less: unamortized loan fees	18,610	1,589
Total debt, net of unamortized loan fees	829,265	199,661
Current maturities of long term debt, net of unamortized loan fees	32,041	22,492
Long-term debt, less current maturities, net of unamortized loan fees	797,224	177,169
Term Loan A [Member]
Debt Instrument [Line Items]
Total	0	201,250
Term loan A-1 [Member]
Debt Instrument [Line Items]
Total	472,875	0
Term loan A-2 [Member]
Debt Instrument [Line Items]
Total	$ 375,000	$ 0