Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Deferred revenue	$ 24,037	$ 21,400
Holdbacks and earn-outs	14,403	20,823
Accrued other insurance	6,380	6,169
Deferred rent	5,492	5,347
Accrued health insurance	5,012	4,818
Miscellaneous accrued taxes	4,407	2,966
Accrued worker's compensation	3,938	3,733
Accrued accounting and legal fees	3,822	2,508
Customer deposits	2,236	3,168
Accrued lease payments	1,355	1,409
Other	23,963	19,442
Other accrued liabilities	$ 95,045	$ 91,783