Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Revenues
Total revenues	$ 217,489	$ 207,648	$ 192,993
Cost of revenues
Total cost of revenues	140,359	135,094	133,002
Selling, general and administrative expenses	46,048	51,083	48,780
Other operating (income) loss, net	(1,269)	(1,469)	(3,226)
Impairments and other charges	0	0	7,905
Operating income from continuing operations	32,351	22,940	6,532
Foreign currency exchange (gain) loss	869	(889)	1,276
Interest expense, net	2,621	4,107	3,510
Income from continuing operations before income taxes	28,861	19,722	1,746
Provision (benefit) for income taxes from continuing operations	(6,738)	5,573	924
Income from continuing operations	35,599	14,149	822
Discontinued operations:
Income (loss) from discontinued operations before income taxes	4,360	5,460	(18,209)
Loss on sale of discontinued operations before income taxes	(195,729)	0	0
Provision (benefit) for income taxes from discontinued operations	(5,508)	5,093	3,447
Income (loss) from discontinued operations	(185,861)	367	(21,656)
Net income (loss)	$ (150,262)	$ 14,516	$ (20,834)
Income (loss) per common share - basic
Income from continuing operations (in shares)	$ 0.41	$ 0.16	$ 0.01
Income (loss) from discontinued operations (in dollars per share)	(2.17)	0	(0.23)
Net income (loss), basic (in dollars per share)	(1.75)	0.17	(0.22)
Income (loss) per common share - diluted
Income from continuing operations-diluted (in dollars per share)	0.41	0.16	0.01
Income (loss) from discontinued operations (in dollars per share)	(2.13)	0	(0.23)
Net income (loss), diluted (in dollars per share)	$ (1.72)	$ 0.16	$ (0.22)
Rental and service revenues
Revenues
Total revenues	$ 145,785	$ 149,954	$ 134,301
Cost of revenues
Total cost of revenues	94,324	98,588	91,506
Product sales revenues
Revenues
Total revenues	71,704	57,694	58,692
Cost of revenues
Total cost of revenues	$ 46,035	$ 36,506	$ 41,496