Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues
Total revenues		$ 76,584	$ 66,837	$ 149,441	$ 122,196
Operating expenses
Selling, general and administrative		15,975	16,300	33,926	28,908
Research and development		10,040	9,009	20,250	17,069
Write-downs and other charges		342	64	435	788
Depreciation and amortization		19,160	18,611	38,029	37,019
Total operating expenses		66,771	59,409	133,950	111,353
Income from operations		9,813	7,428	15,491	10,843
Other expense (income)
Interest expense		8,087	11,517	17,560	22,498
Interest income		(214)	(276)	(423)	(564)
Loss on extinguishment and modification of debt		0	0	8,549	0
Other expense (income)		277	(181)	269	(34)
Income (loss) before income taxes		1,663	(3,632)	(10,464)	(11,057)
Income tax expense		(121)	(251)	(588)	(596)
Net income (loss)		1,542	(3,883)	(11,052)	(11,653)
Foreign currency translation adjustment		(561)	886	443	24
Total comprehensive income (loss)		$ 981	$ (2,997)	$ (10,609)	$ (11,629)
Basic and diluted income (loss) per common share:
Basic (in dollars per share)		$ 0.04	$ (0.11)	$ (0.30)	$ (0.32)
Diluted (in dollars per share)		$ 0.04	$ (0.11)	$ (0.30)	$ (0.32)
Weighted average common shares outstanding:
Basic (in shares)		36,998	36,632	37,051	36,549
Diluted (in shares)		36,998	36,632	37,051	36,549
Gaming Operations [Member]
Revenues
Total revenues		$ 56,640	$ 55,039	$ 109,804	$ 99,455
Operating expenses
Cost of goods and services	[1]	10,868	9,677	21,137	18,353
Equipment Sales [Member]
Revenues
Total revenues		19,944	11,798	39,637	22,741
Operating expenses
Cost of goods and services		$ 10,386	$ 5,748	$ 20,173	$ 9,216

[1] exclusive of depreciation and amortization