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15. Parent Company Financial Statements (Details 1) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Selling, general and administrative expenses | $ 16,085 | $ 13,191
Operating loss | (10,926) | (12,183)
Other expense |  |
Interest expense | 25,690 | 19,304
Other (income) expense | 1,245 | (277)
Loss before income taxes | (36,280) | (31,764)
Income tax expense | (7) | (6)
Net loss | (36,287) | (31,770)
Other comprehensive loss |  |
Foreign currency translation adjustment | (672) | 484
Comprehensive loss | (36,959) | (31,286)
Parent Company Financial Statements |  |
Equity in subsidiary losses | (29,009) | (22,341)
Selling, general and administrative expenses | 8,742 | 7,317
Operating loss | (37,751) | (29,658)
Other expense |  |
Interest expense | 1,281 | 503
Other (income) expense | (6,023) | 134
Loss before income taxes | (33,009) | (30,295)
Income tax expense | 7 | 6
Net loss | (330,116) | (30,301)
Other comprehensive loss |  |
Foreign currency translation adjustment | (672) | 484
Comprehensive loss | $ (33,688) | $ (29,817)

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