Other Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current portion of other long-term liabilities
Interest rate swap and cap contracts	$ 24,417	$ 15,565
Operating lease liabilities	18,943	20,345
Acquisition related contingent consideration	9,522	4,963
Asset retirement obligations	5,488	5,701
Deferred revenue	3,345	3,386
Other	2,618	3,184
Total current portion of other long-term liabilities	64,333	53,144
Noncurrent portion of other long-term liabilities
Interest rate swap and cap contracts	34,084	9,723
Deferred revenue	4,811	5,589
Acquisition related contingent consideration	0	11,888
Other	10,196	10,670
Total noncurrent portion of other long-term liabilities	$ 49,091	$ 37,870