Acquisitions And New Ventures (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 16, 2014	Dec. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Oct. 02, 2015
Schedule of Equity Method Investments [Line Items]
Revenues			$ 0	$ 0	$ 0	$ 0
Tax refund due to Big Fish Games former equity holders		$ 18,087	6,342		6,342		$ 18,087
Goodwill, Purchase Accounting Adjustments					400		1,400
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Deferred Income Taxes					500		800
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Income Tax Receivable					100
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Accrued Expenses							2,200
Deferred payments to Big Fish Games former equity holders					12,700
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest			4,953	$ 4,377	103,854	$ 95,339
Big Fish Games [Member]
Schedule of Equity Method Investments [Line Items]
Revenues			103,500		300,000
Payments to Acquire Businesses, Gross	$ 838,300
Future Business Acquisition, Cost Of Acquired Entity, Cash paid	401,700
Deferred Payment-Founder	85,300
Deferred Founders Payment,Time Payable		3 years
Deferred Payment-Founder, Fair Value	78,000
Tax refund due to Big Fish Games former equity holders	18,100
Business Acquisition, Equity Interest Issued or Issuable, Value Assigned	15,800
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares		157,115
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	350,000
Business Combination, Contingent Consideration, Liability	324,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents	34,700
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest			9,000		10,000
Purchase price, net of cash acquired	$ 803,658
Saratoga Casino Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Purchase price, net of cash acquired			$ 6,400		$ 6,400
Secured Debt [Member]
Schedule of Equity Method Investments [Line Items]
Other Loans Payable, Long-term, Noncurrent		$ 200,000					$ 200,000
Subsequent Event | Saratoga Casino Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage								25.00%
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net								$ 24,800
Subsequent Event | Gideon Putnam Hotel and Resort [Member] | Saratoga Casino Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Ownership Percentage								50.00%