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Acquisitions (Details Textual)
3 Months Ended 6 Months Ended
Apr. 22, 2016
USD ($)
Device
Jan. 29, 2016
USD ($)
Device
payment
$ / shares
shares
Jun. 30, 2017
USD ($)
Mar. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
payment
Jun. 30, 2016
USD ($)
Initial Montana Acquisition [Member]              
Business Acquisition [Line Items]              
Number of gaming devices acquired | Device   1,100          
Business Acquisition, consideration transaction price   $ 20,100,000   $ 20,100,000      
Business Acquisition, Value of Shares Issued   $ 500,000          
Business Acquisition, Value of Shares | shares   50,252          
Shares Issued, Price Per Share | $ / shares   $ 9.95          
Business Combination, Contingent Consideration Maximum   $ 2,000,000          
Business Combination, Contingent Consideration Arrangements, Number of Periodic Payment | payment   4       4  
Business Combination Contingent Consideration Arrangements Quarterly Payments, Start date           2017-09  
Second Montana Acquisition [Member]              
Business Acquisition [Line Items]              
Number of gaming devices acquired | Device 1,800            
Business Acquisition, consideration transaction price $ 25,700,000   $ 25,700,000        
Montana Acquisitions [Member]              
Business Acquisition [Line Items]              
Business Combination, Net Revenue related to the Acquiree     15,400,000   $ 12,900,000 $ 30,600,000 $ 16,900,000
Montana Acquisitions [Member] | Preopening Expenses [Member]              
Business Acquisition [Line Items]              
Transaction-Related Costs           $ 200,000 $ 200,000
Montana Acquisitions [Member] | Preopening Expenses [Member] | Maximum [Member]              
Business Acquisition [Line Items]              
Transaction-Related Costs     $ 100,000   $ 100,000