Note 1 - Description of the Business and Summary of Significant Accounting Policies - Property and Equipment Useful Life (Details)	3 Months Ended
	Mar. 31, 2020
Minimum [Member]
Gaming equipment (in years) (Year)	2 years
Maximum [Member]
Gaming equipment (in years) (Year)	6 years
Gaming Equipment [Member] | Minimum [Member]
Gaming equipment (in years) (Year)	2 years
Gaming Equipment [Member] | Maximum [Member]
Gaming equipment (in years) (Year)	6 years
Property, Plant and Equipment, Other Types [Member] | Minimum [Member]
Gaming equipment (in years) (Year)	3 years
Property, Plant and Equipment, Other Types [Member] | Maximum [Member]
Gaming equipment (in years) (Year)	6 years