Annual report pursuant to Section 13 and 15(d)

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details)

v3.10.0.1
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Income Tax Disclosure [Abstract]    
Claims and insurance reserves $ 27,433 $ 29,008
Accrued vacation 17,932 17,832
Deferred compensation 31,306 29,220
Other 20,861 15,157
Total deferred tax assets 97,532 91,217
Depreciation and amortization (339,311) (266,730)
Unrecognized revenue   (10,007)
Other (3,151) (1,703)
Total deferred tax liabilities (342,462) (278,440)
Net deferred tax liability $ (244,930) $ (187,223)