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14. Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 0	$ 0
State and local	8	8
Foreign	0	0
Current	8	8
Deferred:
Federal	0	0
State and local	0	0
Foreign	(984)	1,123
Income tax expense (benefit)	$ (976)	$ 1,131

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