Stockholders' Equity - Authorized Capital (Details) - USD ($)		4 Months Ended
	Nov. 14, 2018	Dec. 31, 2009	Dec. 31, 2018	Nov. 06, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Nov. 01, 2016
Class of Stock [Line Items]
Voting power percentage		50.00%
Capital stock, shares authorized (in shares)									155,000,000
Common stock, shares authorized (in shares)			150,000,000		150,000,000	150,000,000	150,000,000	150,000,000	150,000,000
Preferred stock, shares authorized (in shares)									5,000,000
bet365 [Member]
Class of Stock [Line Items]
Sale of Stock, Shares Available for Purchase	2,500,000
Preferred DIstribution, Percentage of Positive DIfference	50.00%
Sale of Stock, Remaining Shares under Agreement	814,241
Sale of Stock, Price Per Share	$ 20
Sale of Stock, Total Consideration To Be Received On Transaction	$ 50,000,000
Voting power percentage	100.00%
Sale of Stock, Consideration Received on Transaction	$ 29,600,000
Preferred Distribution, Term	3 years
Preferred Distribution, Sale of Common Stock Prior to Trigger Date	$ 0
Sale of Stock, Number of Shares Issued in Transaction	1,685,759
Initial Put Option [Member]
Class of Stock [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs			$ 900,000
Contingent Put Option [Member]
Class of Stock [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs			400,000
Forward Contracts [Member]
Class of Stock [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs			1,900,000
Fair Value, Inputs, Level 3 [Member] | Initial Put Option [Member]
Class of Stock [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs			879,000					$ 0
Fair Value, Inputs, Level 3 [Member] | Forward Contracts [Member]
Class of Stock [Line Items]
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs			$ 1,865,000					$ 0
2018 Kien Huat Preferred Stock Commitment Letter [Member] | Kien Huat Realty III Limited [Member] | Series F
Class of Stock [Line Items]
Share Purchase Agreement, Maximum Purchase Amount				$ 126,000,000
Share Purchase Program Schedule, Period One [Member] | 2018 Kien Huat Preferred Stock Commitment Letter [Member] | Kien Huat Realty III Limited [Member] | Series F
Class of Stock [Line Items]
Share Purchase Agreement, Maximum Purchase Amount				$ 12,000,000