Other Intangible Assets (Additional Information and Expected Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Jan. 18, 2019	Jun. 30, 2018
Finite-Lived Intangible Assets [Line Items]
Amortization expense	$ 4,400	$ 400
Amortization Expense, Fiscal Year Maturity [Abstract]
2019	4,516
Net	19,286	$ 26
Finite-Lived Intangible Assets, Amortization Expense, Year Five	1,075
Finite-Lived Intangible Assets, Amortization Expense, Year Four	1,136
Finite-Lived Intangible Assets, Amortization Expense, Year Three	$ 2,631
Netherlands-Based Game Development Studio
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired				$ 100
Rhapsody America LLC
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired			$ 23,700