Annual report pursuant to Section 13 and 15(d)

Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details)

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Accrued Expenses and Other Current Liabilities - Summary of Accrued Expenses and Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Accrued compensation, benefits and related taxes $ 20,898 $ 11,552
State and local taxes payable 18,687 2,126
Financed insurance premiums 6,761 4,876
Insurance reserves 4,678 2,942
Deferred revenue 4,304 15,210
Other 4,324 4,189
Total $ 59,652 $ 40,895