Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenues
Revenues, total	$ 103,896	$ 68,755	$ 288,821	$ 202,759
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	41,181	37,054	118,168	95,251
Gross margin	62,715	31,701	170,653	107,508
Selling, general and administrative expenses	36,282	32,905	109,336	100,181
Research and development	2,771	1,115	7,388	3,667
Amortization of intangible assets	1,107	1,111	3,328	3,412
Credit loss expense, net	523	808	1,589	8,149
Asset impairments				4,470
Executive transition costs			1,353
Income (loss) from operations	22,032	(4,238)	47,659	(12,371)
Unrealized investment gains	364	35	436	99
Retirement benefits non-service expense	(77)	(140)	(232)	(417)
Interest income	738	257	1,838	1,176
Interest expense	(1,483)	(1,323)	(5,045)	(4,354)
Income (loss) before taxes	21,574	(5,409)	44,656	(15,867)
Income tax expense	(6,555)	(2,348)	(14,901)	(8,091)
Net income (loss)	15,019	(7,757)	29,755	(23,958)
Less: net income attributable to non-controlling interests	(3,029)	(1,196)	(6,960)	(1,455)
Net income (loss) attributable to common shareholders	$ 11,990	$ (8,953)	$ 22,795	$ (25,413)
Net income (loss) per share attributable to common shareholders - basic and diluted:
Net income (loss) per share attributable to common shareholders - basic	$ 0.22	$ (0.16)	$ 0.42	$ (0.44)
Net income (loss) per share attributable to common shareholders - diluted	$ 0.22	$ (0.16)	$ 0.41	$ (0.44)
Weighted average shares outstanding - basic	54,618	56,039	54,424	57,301
Weighted average shares outstanding - diluted	55,535	56,039	55,261	57,301
Technology Sales [Member]
Revenues
Revenues, total	$ 18,273	$ 18,065	$ 65,455	$ 35,270
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	7,948	10,061	28,951	20,264
Image Enhancement and Maintenance Services [Member]
Revenues
Revenues, total	60,250	36,233	154,244	117,285
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	26,646	20,563	69,470	56,259
Technology Rentals [Member]
Revenues
Revenues, total	23,008	12,540	62,612	43,726
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	6,587	6,430	19,747	18,728
Finance Income [Member]
Revenues
Revenues, total	$ 2,365	$ 1,917	$ 6,510	$ 6,478