Business and Asset Acquisitions - Schedule of Consideration Payable (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Business Acquisition [Line Items]
Current	$ 4,041	$ 3,013
Long-Term	20,270	20,943
TAV
Business Acquisition [Line Items]
Current	490	490
Long-Term	3,078	3,206
Fair Share Gaming
Business Acquisition [Line Items]
Current	1,232	1,096
Long-Term	566	523
Family Amusement
Business Acquisition [Line Items]
Current	394	391
Long-Term	2,536	2,609
Skyhigh
Business Acquisition [Line Items]
Current	722	601
Long-Term	5,873	5,789
G3
Business Acquisition [Line Items]
Current	387	355
Long-Term	62	100
Grand River
Business Acquisition [Line Items]
Current	0	0
Long-Term	5,922	5,755
IGS
Business Acquisition [Line Items]
Current	80	80
Long-Term	0	0
Tom's Amusements
Business Acquisition [Line Items]
Current	736	0
Long-Term	727	1,455
AVG
Business Acquisition [Line Items]
Current	0	0
Long-Term	$ 1,506	$ 1,506