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Income Taxes - Rollforward Net operating losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Income Taxes    
Balance at January 1, $ 1,900 $ 4,300
NOL generated (utilized) 500 (2,400)
Balance at December 31, $ 2,400 1,900
Global Intangible Low-Taxed Income (in percent) 10.50%  
Cash and cash equivalents $ 4,304 10,091
Cash balance held by foreign subsidiaries 2,300  
Penalties and interest related to unrecognized tax benefits $ 0 $ 0