Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Payables and Accruals [Abstract]
Accrued Development Projects costs	$ 4,922	$ 71,713	$ 40,783
Liability for horseracing purses	868	886
Accrued payroll	8,142	1,715
Accrued marketing	5,298	52
Accrued interest expense	5,033	14
Accrued redeemable points and deferred revenues	2,202	271
Liability to NYSGC	2,816	1,507
Liability for local progressive jackpot	2,560	1,110
Accrued premium game leases	1,288	0
Accrued professional fees	2,337	744
Federal tax withholding payable	561	81
Accrued other	2,573	940
Total accrued expenses and other current liabilities	$ 33,678	$ 7,320