Note 1 - Description of the Business and Summary of Significant Accounting Policies - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Total revenues	$ 77,786	$ 79,377	$ 74,509	$ 73,042	$ 72,095	$ 75,526	$ 72,822	$ 64,856	$ 304,714	$ 285,299	$ 211,955
Gaming Operations [Member]
Total revenues									210,534	201,809	170,252
Equipment Sales [Member]
Total revenues									94,180	83,490	41,703
EGM [Member]
Total revenues									289,642	271,025	199,931
EGM [Member] | Gaming Operations [Member]
Total revenues									196,101	187,809	158,335
EGM [Member] | Equipment Sales [Member]
Total revenues									93,541	83,216	41,596
Table Products [Member]
Total revenues									10,194	7,651	4,065
Table Products [Member] | Gaming Operations [Member]
Total revenues									9,555	7,377	3,958
Table Products [Member] | Equipment Sales [Member]
Total revenues									639	274	107
Interactive (Gaming Operations) [Member]
Total revenues									4,878	6,623	7,959
Interactive (Gaming Operations) [Member] | RMG [Member]
Total revenues									3,319	6,147	7,959
Interactive (Gaming Operations) [Member] | Social [Member]
Total revenues									$ 1,559	$ 476