Note 2 - Acquisitions (Details Textual) $ in Thousands			3 Months Ended
	Feb. 08, 2019 USD ($)	Dec. 06, 2017 USD ($)	Sep. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Goodwill, Ending Balance						$ 287,049	$ 277,263	$ 278,337
In Bet [Member]
Business Combination, Consideration Transferred, Total			$ 4,000		$ 9,600
Business Acquisition, Goodwill, Expected Tax Deductible Amount			1,200		$ 3,200
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total			$ 2,800
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			9 years 109 days		9 years
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 5,500
Business Combination, Contingent Consideration, Asset, Total					$ 2,600
Integrity Gaming Corp [Member]
Business Combination, Consideration Transferred, Total	$ 52,582
Number of Gaming Machines	2,500
Number of Casinos	33
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities	$ 600
Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed, Uncertain Tax Position	1,400
Payments to Acquire Businesses, Gross	12,335
Business Combination, Consideration Transferred, Liabilities Incurred	39,806
Goodwill, Ending Balance	11,380
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 30,600
Integrity Gaming Corp [Member] | Customer Relationships [Member]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Gameiom Technologies Limited [Member]
Business Combination, Consideration Transferred, Total				$ 5,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total				$ 2,100
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life				6 years 255 days
Payments to Acquire Businesses, Gross				$ 4,500
Business Combination, Consideration Transferred, Liabilities Incurred				$ 500
Deferred Consideration To Acquire Business, Payment Terms				1 year 180 days
Goodwill, Ending Balance				$ 3,700
Rocket [Member]
Business Combination, Consideration Transferred, Total		$ 56,850
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total		$ 30,290
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		6 years 146 days
Goodwill, Ending Balance		$ 23,217
Business Combination, Electronic Gaming Machines Acquired		1,500
Rocket [Member] | Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 22,500
Rocket [Member] | Gaming Software and Technology Platforms [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		6,900
Rocket [Member] | Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		$ 900