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10. Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Revenues | $ 50,619 | $ 45,028 | $ 92,507 | $ 88,046
Cost of goods sold | 47,346 | 42,260 | 89,585 | 83,412
Gross profit | 3,273 | 2,768 | 2,922 | 4,634
Other Expenses |  |  |  |
Research and development expenses | 90 | 55 | 123 | 117
Selling, general and administrative expenses | 3,945 | 3,589 | 8,186 | 7,396
Interest expense | 6,586 | 5,351 | 12,795 | 14,379
Accretion of Series A preferred units | 471 | 0 | 920 | 0
Loss contingency on litigation | 6,200 | 0 | 6,200 | 0
Other (income) expense | (89) | (5) | (712) | 63
Income (loss) before income taxes | (13,930) | (6,222) | (24,590) | (17,321)
Capital expenditures | 440 | 775 | 1,038 | 1,771
Depreciation | 1,096 | 1,149 | 2,234 | 2,299
North America |  |  |  |
Revenues | 39,486 | 39,628 | 76,122 | 76,804
Cost of goods sold | 38,483 | 37,079 | 75,450 | 73,061
Gross profit | 1,003 | 2,549 | 672 | 3,743
Other Expenses |  |  |  |
Research and development expenses | 90 | 55 | 123 | 117
Selling, general and administrative expenses | 3,190 | 3,420 | 7,256 | 6,935
Interest expense | 6,470 | 5,199 | 12,512 | 14,083
Accretion of Series A preferred units | 471 | 0 | 920 | 0
Loss contingency on litigation | 6,200 | 0 | 6,200 | 0
Other (income) expense | (74) | (2) | 37 | 43
Income (loss) before income taxes | (15,344) | (6,123) | (26,376) | (17,435)
Capital expenditures | 234 | 567 | 585 | 1,057
Depreciation | 947 | 992 | 1,941 | 1,984
India |  |  |  |
Revenues | 11,133 | 5,400 | 16,385 | 11,242
Cost of goods sold | 8,863 | 5,181 | 14,135 | 10,351
Gross profit | 2,270 | 219 | 2,250 | 891
Other Expenses |  |  |  |
Research and development expenses | 0 | 0 | 0 | 0
Selling, general and administrative expenses | 755 | 169 | 930 | 461
Interest expense | 116 | 152 | 283 | 296
Accretion of Series A preferred units | 0 | 0 | 0 | 0
Loss contingency on litigation | 0 | 0 | 0 | 0
Other (income) expense | (15) | (3) | (749) | 20
Income (loss) before income taxes | 1,414 | (99) | 1,786 | 114
Capital expenditures | 206 | 208 | 453 | 714
Depreciation | $ 149 | $ 157 | $ 293 | $ 315

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