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15. Parent Company Financial Statements (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Selling, general and administrative expenses | $ 16,882 | $ 17,424
Operating loss | (6,070) | (4,931)
Other expense |  |
Interest expense | 26,344 | 25,755
Other (income) expense | (548) | 797
Loss before income taxes | (37,635) | (38,346)
Income tax expense | 976 | (1,131)
Net loss | (36,659) | (39,477)
Other comprehensive loss |  |
Foreign currency translation adjustment | (289) | (249)
Comprehensive loss | (36,948) | (39,726)
Parent Company Financial Statements |  |
Equity in subsidiary losses | (28,820) | (21,745)
Selling, general and administrative expenses | 6,707 | 6,673
Operating loss | (35,527) | (28,418)
Other expense |  |
Interest expense | 677 | 1,392
Other (income) expense | 448 | 5,899
Loss before income taxes | (36,652) | (35,709)
Income tax expense | 7 | 7
Net loss | (36,659) | (35,716)
Other comprehensive loss |  |
Foreign currency translation adjustment | (289) | (249)
Comprehensive loss | $ (36,948) | $ (35,965)

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