Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenues
Revenues, total	$ 97,979	$ 73,968	$ 184,925	$ 134,004
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	40,092	29,932	76,987	58,197
Gross margin	57,887	44,036	107,938	75,807
Selling, general and administrative expenses	38,906	37,095	73,054	67,276
Research and development	2,762	1,356	4,617	2,552
Amortization of intangible assets	1,147	1,104	2,221	2,301
Credit loss expense, net	846	112	1,066	7,341
Asset impairments		4,470		4,470
Executive transition costs			1,353
Income (loss) from operations	14,226	(101)	25,627	(8,133)
Unrealized investment gains	28	30	72	64
Retirement benefits non-service expense	(78)	(138)	(155)	(277)
Interest income	693	417	1,100	919
Interest expense	(1,795)	(1,326)	(3,562)	(3,031)
Income (loss) before taxes	13,074	(1,118)	23,082	(10,458)
Income tax expense	(3,461)	(3,133)	(8,346)	(5,743)
Net income (loss)	9,613	(4,251)	14,736	(16,201)
Less: net (income) loss attributable to non-controlling interests	(1,262)	1,400	(3,931)	(259)
Net income (loss) attributable to common shareholders	$ 8,351	$ (2,851)	$ 10,805	$ (16,460)
Net income (loss) per share attributable to common shareholders - basic and diluted:
Net income (loss) per share attributable to common shareholders - basic	$ 0.15	$ (0.05)	$ 0.20	$ (0.28)
Net income (loss) per share attributable to common shareholders - diluted	$ 0.15	$ (0.05)	$ 0.20	$ (0.28)
Weighted average shares outstanding - basic	54,591	57,320	54,328	57,943
Weighted average shares outstanding - diluted	55,320	57,320	55,145	57,943
Technology Sales [Member]
Revenues
Revenues, total	$ 29,360	$ 8,229	$ 47,182	$ 17,205
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	13,771	4,218	21,003	10,203
Image Enhancement and Maintenance Services [Member]
Revenues
Revenues, total	46,867	44,958	93,994	81,052
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	19,739	19,953	42,824	35,696
Technology Rentals [Member]
Revenues
Revenues, total	19,546	18,525	39,604	31,186
Costs and expenses applicable to revenues
Cost and expenses applicable to revenues, total	6,582	5,761	13,160	12,298
Finance Income [Member]
Revenues
Revenues, total	$ 2,206	$ 2,256	$ 4,145	$ 4,561