Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Development Costs [Line Items]
Project Development Costs	$ 3,503	$ 4,922	$ 37,427
Liability for horseracing purses	1,403	868
Accrued payroll	7,791	8,142
Accrued interest expense	4,645	5,033
Accrued marketing	6,005	5,298
Deferred revenue - loyalty points	2,322	2,202
Liability to the NYSGC	1,681	2,816
Liability for local progressive jackpot	2,918	2,560
Accrued premium game leases	477	1,288
Accrued professional fees	1,098	2,337
Accrued utilities	271	561
Accrued other	3,680	2,573
Total accrued expenses and other current liabilities	32,291	33,678
Construction Manager Costs [Member]
Development Costs [Line Items]
Project Development Costs	$ 3,500	$ 4,900