Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) $ in Thousands	Mar. 31, 2023 USD ($) shares	Mar. 31, 2023 € / shares	Dec. 31, 2022 USD ($) shares	Dec. 31, 2022 € / shares
Assets
Accounts receivable, allowance | $	$ 177		$ 85
Property, plant and equipment, accumulated depreciation | $	5,167		4,782
Intangible assets, accumulated amortization | $	$ 17,111		$ 16,798
Shareholders' Deficit:
Common stock, nominal value (in Euro per share) | € / shares		€ 1.00		€ 1.00
Common stock, shares authorized (in shares)	3,992,078		3,992,078
Common stock, issued (in shares)	2,661,386		2,661,386
Common stock, outstanding (in shares)	2,625,476		2,623,820
Treasury stock (in shares)	35,910		37,566