Revenue from Contracts with Customers - Disaggregation of Revenue by Segment (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Disaggregation of Revenue [Line Items]
Revenues	[1]	$ 86,946	$ 60,036
Technology Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		17,822	8,976
Image Enhancement and Maintenance Services [Member]
Disaggregation of Revenue [Line Items]
Revenues		47,127	36,094
Technology Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues		20,058	12,661
Finance Income [Member]
Disaggregation of Revenue [Line Items]
Revenues		1,939	2,305
Content Solutions Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	[1]	32,101	20,988
Content Solutions Segment [Member] | Film Remastering And Distribution [Member]
Disaggregation of Revenue [Line Items]
Revenues		30,073	19,564
Content Solutions Segment [Member] | Other Content Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues		2,028	1,424
Content Solutions Segment [Member] | Image Enhancement and Maintenance Services [Member]
Disaggregation of Revenue [Line Items]
Revenues		32,101	20,970
Content Solutions Segment [Member] | Image Enhancement and Maintenance Services [Member] | Film Remastering And Distribution [Member]
Disaggregation of Revenue [Line Items]
Revenues		30,073	19,564
Content Solutions Segment [Member] | Image Enhancement and Maintenance Services [Member] | Other Content Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues		2,028	1,406
Content Solutions Segment [Member] | Technology Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues			18
Content Solutions Segment [Member] | Technology Rentals [Member] | Other Content Solutions [Member]
Disaggregation of Revenue [Line Items]
Revenues			18
Technology Products and Services Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues	[1]	51,667	37,863
Technology Products and Services Segment [Member] | System Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		16,119	7,973
Technology Products and Services Segment [Member] | System Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues		20,058	12,643
Technology Products and Services Segment [Member] | Maintenance [Member]
Disaggregation of Revenue [Line Items]
Revenues		13,551	14,942
Technology Products and Services Segment [Member] | Technology Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		16,119	7,973
Technology Products and Services Segment [Member] | Technology Sales [Member] | System Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		16,119	7,973
Technology Products and Services Segment [Member] | Image Enhancement and Maintenance Services [Member]
Disaggregation of Revenue [Line Items]
Revenues		13,551	14,942
Technology Products and Services Segment [Member] | Image Enhancement and Maintenance Services [Member] | Maintenance [Member]
Disaggregation of Revenue [Line Items]
Revenues		13,551	14,942
Technology Products and Services Segment [Member] | Technology Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues		20,058	12,643
Technology Products and Services Segment [Member] | Technology Rentals [Member] | System Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues		20,058	12,643
Technology Products and Services Segment [Member] | Finance Income [Member]
Disaggregation of Revenue [Line Items]
Revenues		1,939	2,305
Content Solutions Segment Technology Products and Services Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues		83,768	58,851
Content Solutions Segment Technology Products and Services Segment [Member] | Technology Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		16,119	7,973
Content Solutions Segment Technology Products and Services Segment [Member] | Image Enhancement and Maintenance Services [Member]
Disaggregation of Revenue [Line Items]
Revenues		45,652	35,912
Content Solutions Segment Technology Products and Services Segment [Member] | Technology Rentals [Member]
Disaggregation of Revenue [Line Items]
Revenues		20,058	12,661
Content Solutions Segment Technology Products and Services Segment [Member] | Finance Income [Member]
Disaggregation of Revenue [Line Items]
Revenues		1,939	2,305
All Other Segment [Member]
Disaggregation of Revenue [Line Items]
Revenues		3,178	1,185
All Other Segment [Member] | Technology Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues		1,703	1,003
All Other Segment [Member] | Image Enhancement and Maintenance Services [Member]
Disaggregation of Revenue [Line Items]
Revenues		$ 1,475	$ 182

[1] The Company’s largest customer represents 9% of total Revenues for the three months ended March 31, 2023 (2022 — 11%). No single customer comprises more than 10% of the Company’s total Accounts Receivable as of March 31, 2023 and December 31, 2022.