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Income Taxes - Rollforward Net operating losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Taxes
Balance at January 1,	$ 2,900	$ 1,800
NOL generated (utilized)	1,400	1,100
Balance at December 31,	$ 4,300	2,900
Global Intangible Low-Taxed Income (in percent)	10.50%
Cash and cash equivalents	$ 10,777	6,120
Cash balance held by foreign subsidiaries	2,400
Penalties and interest related to unrecognized tax benefits	$ 0	$ 0

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Amount of cash balance held by foreign subsidiaries.

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Amount of operating loss carryforwards generated or utilized.

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Percentage of tax on Global Intangible Low-Taxed Income.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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