Quarterly Financial Results (Unaudited) (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2023	Dec. 31, 2022
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales	$ 33,195	$ 33,586	$ 34,143	$ 35,991	$ 35,262	$ 34,337	$ 33,160	$ 132,379	$ 138,750
Sales, marketing and support	4,841	5,124	5,708	4,863	5,700	5,668	6,967	20,925	23,198
Net loss from continuing operations	(4,369)	773	367	788	(196)	(273)	(4,314)	(15,422)	(3,995)
Net (loss) income	(4,369)	773	367	752	29,545	(1,528)	(4,739)	(15,422)	24,030
Product
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales								17,757	26,842
Cost of product and service sales	4,511	6,218	5,313	7,657	6,951	5,074	5,476	$ 29,149	25,158
As Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales	33,549	34,171	33,689	36,005	35,169	34,553	33,151		138,878
Sales, marketing and support	4,854	5,142	5,712	4,874	5,710	5,676	6,969		23,229
Net loss from continuing operations	(4,246)	925	(12)	627	(95)	(189)	(4,267)		(3,924)
Net (loss) income	(4,246)	925	(12)	591	29,646	(1,444)	(4,692)		24,101
As Reported | Product
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of product and service sales	4,729	6,633	5,234	7,821	6,747	5,198	5,418		25,184
Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales	(354)	(585)	454	(14)	93	(216)	9		(128)
Sales, marketing and support	(13)	(18)	(4)	(11)	(10)	(8)	(2)		(31)
Net loss from continuing operations	(123)	(152)	379	161	(101)	(84)	(47)		(71)
Net (loss) income	(123)	(152)	379	161	(101)	(84)	(47)		(71)
Adjustment | Product
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Cost of product and service sales	$ (218)	$ (415)	$ 79	$ (164)	$ 204	$ (124)	$ 58		$ (26)