Other Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Deferred revenue	$ 23,702	$ 21,400
Holdbacks and earn-outs	14,225	20,823
Deferred rent	5,690	5,347
Accrued health insurance	5,548	4,818
Accrued worker's compensation	5,530	3,733
Miscellaneous accrued taxes	4,855	2,966
Accrued accounting and legal fees	3,992	2,508
Accrued other insurance	2,744	6,169
Customer deposits	1,663	3,168
Accrued lease payments	1,571	1,409
Other	23,533	19,442
Other accrued liabilities	$ 93,053	$ 91,783