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Summary of Significant Accounting Policies (Details Textual) - USD ($)
 1 Months Ended 3 Months Ended 12 Months Ended
Mar. 12, 2019
Apr. 01, 2018
Nov. 30, 2017
Dec. 31, 2018
Sep. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Nov. 07, 2018
Accounting Policies [Line Items]                      
Property and equipment and other long-lived assets, impairment charges               $ 0 $ 0 $ 0  
Decrease in depreciation expense               (6,400,000)      
Increase in net income               $ 900,000      
Increase in loss per share basic               $ 0.03      
Increase in loss per share diluted               $ 0.03      
Derivative instrument, notional amount     $ 650,000,000                
Derivative instrument, purchase price     $ 3,100,000                
Derivative instrument, expiration date     Dec. 31, 2020                
LIBOR exceeds ceiling rate     2.25%                
Payments or receipts exchanged on interest rate cap     $ 0                
Interest rate derivative assets, at fair value       $ 5,000,000       $ 5,000,000      
Gaming liabilities       $ 12,473,000     $ 12,209,000 12,473,000 12,209,000    
Amortized to interest expense               5,100 1,600 700  
Gaming Tax and Licenses Expense               $ 55,300,000 $ 41,500,000 $ 35,700,000  
Anti-dilutive potential common share equivalents       1,028,000 1,870,000   2,373,000        
Shares repurchased               1,200,000 0 0  
Common stock, par value (in dollars per share)       $ 0.01     $ 0.01 $ 0.01 $ 0.01    
Shares repurchased, value               $ 19,598,000      
Average price per share               $ 16.06      
Common stock repurchase, remaining authorized       $ 5,400,000       $ 5,400,000      
Subsequent Event [Member]                      
Accounting Policies [Line Items]                      
Common stock repurchase, authorized $ 25,000,000                    
Accumulated Deficit [Member]                      
Accounting Policies [Line Items]                      
Shares repurchased, value               19,586,000      
Maximum [Member]                      
Accounting Policies [Line Items]                      
Common stock repurchase, authorized                     $ 25,000,000
Minimum [Member] | Subsequent Event [Member]                      
Accounting Policies [Line Items]                      
Shares repurchased 0                    
General and Administrative Expense [Member]                      
Accounting Policies [Line Items]                      
Advertising Expense               $ 10,100,000 $ 3,300,000 $ 2,600,000  
Anti-dilutive potential common share equivalents               2,014,012      
acePLAY Rewards Program [Member]                      
Accounting Policies [Line Items]                      
Expiration period of participant points after no activity               13 months      
Building and Site Improvements [Member]                      
Accounting Policies [Line Items]                      
Property and equipment, useful lives   19 years       10 years          
Building and Site Improvements [Member] | Maximum [Member]                      
Accounting Policies [Line Items]                      
Property and equipment, useful lives               45 years      
Building and Site Improvements [Member] | Minimum [Member]                      
Accounting Policies [Line Items]                      
Property and equipment, useful lives               10 years