Revenue, classified by the major geographic areas in which our customers are located (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue	$ 556,466	$ 487,739	$ 1,509,492	$ 1,376,942
Residential Contract Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue	249,227	211,906	646,420	578,464
Commercial Contract Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue	204,595	187,378	565,720	527,311
Termite Completions Bait Monitoring Renewals [Member]
Disaggregation of Revenue [Line Items]
Revenue	96,145	83,297	278,746	253,665
Franchise Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,433	3,105	10,136	10,349
Other Revenues [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,066	2,053	8,470	7,153
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenue	516,022	448,910	1,395,189	1,268,652
Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 40,444	$ 38,829	$ 114,303	$ 108,290