Income Taxes - Rollforward Net operating losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Taxes
Balance at January 1,	$ 4,300	$ 2,900
NOL generated (utilized)	(2,400)	1,400
Balance at December 31,	$ 1,900	4,300
Global Intangible Low-Taxed Income (in percent)	10.50%
Cash and cash equivalents	$ 10,091	10,777
Cash balance held by foreign subsidiaries	900
Penalties and interest related to unrecognized tax benefits	$ 0	$ 0