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14. BUSINESS SEGMENTS (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | $ 23,840,391 | $ 38,811,622 | $ 104,160,873 | $ 120,907,839
Net revenue (intersegment) | 1,216,406 | 2,008,397 | 6,305,642 | 6,501,530
Income (loss) from operations before taxes | 4,835,252 | 13,956,200 | 34,130,721 | 39,953,640
Income taxes | 1,509,321 | 3,518,529 | 9,152,597 | 9,996,622
Income (loss) from operations after taxes | 3,325,931 | 10,437,671 | 24,978,124 | 29,957,018
Total assets | 402,569,182 | 377,707,593 | 402,569,182 | 377,707,593
Depreciation and amortization | 5,232,714 | 5,517,358 | 16,042,003 | 19,031,650
Capital expenditure | 563,760 | 15,878,317 | 623,735 | 16,749,192
Goodwill | 28,920,005 | 28,743,418 | 28,920,005 | 28,743,418
Bromine Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 9,549,777 | 15,971,847 | 41,895,304 | 47,621,980
Net revenue (intersegment) | 1,216,406 | 2,008,397 | 6,305,642 | 6,501,530
Income (loss) from operations before taxes | 2,257,069 | 7,898,302 | 17,269,984 | 19,103,472
Income taxes | 564,267 | 1,974,576 | 4,358,455 | 4,775,868
Income (loss) from operations after taxes | 1,692,802 | 5,923,726 | 12,911,529 | 14,327,604
Total assets | 161,722,622 | 150,950,225 | 161,722,622 | 150,950,225
Depreciation and amortization | 3,556,296 | 3,121,243 | 11,349,477 | 11,633,581
Capital expenditure | 466,636 | 12,890,713 | 466,636 | 12,943,491
Goodwill | 0 | 0 | 0 | 0
Crude Salt Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 2,054,729 | 2,310,799 | 6,390,390 | 6,383,095
Net revenue (intersegment) | 0 | 0 | 0 | 0
Income (loss) from operations before taxes | 497,783 | (382,917) | 2,434,872 | (165,403)
Income taxes | 117,494 | (97,982) | 586,240 | (46,369)
Income (loss) from operations after taxes | 380,289 | (284,935) | 1,848,632 | (119,034)
Total assets | 36,586,589 | 32,757,666 | 36,586,589 | 32,757,666
Depreciation and amortization | 765,183 | 1,315,140 | 1,843,856 | 3,847,502
Capital expenditure | 95,864 | 2,336,309 | 95,864 | 2,340,817
Goodwill | 0 | 0 | 0 | 0
Chemical Products Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 12,235,885 | 20,528,976 | 55,875,179 | 66,902,764
Net revenue (intersegment) | 0 | 0 | 0 | 0
Income (loss) from operations before taxes | 3,176,458 | 6,442,708 | 16,441,115 | 20,698,116
Income taxes | 827,560 | 1,641,935 | 4,207,902 | 5,267,123
Income (loss) from operations after taxes | 2,348,898 | 4,800,773 | 12,233,213 | 15,430,993
Total assets | 202,404,825 | 192,128,326 | 202,404,825 | 192,128,326
Depreciation and amortization | 911,235 | 1,080,975 | 2,848,670 | 3,550,567
Capital expenditure | 0 | 0 | 61,235 | 0
Goodwill | 28,920,005 | 28,743,418 | 28,920,005 | 28,743,418
Natural Gas [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 0 | 0 | 0 | 0
Net revenue (intersegment) | 0 | 0 | 0 | 0
Income (loss) from operations before taxes | (33,184) | (2,476) | (90,471) | (2,501)
Income taxes | 0 | 0 | 0 | 0
Income (loss) from operations after taxes | (33,184) | (2,476) | (90,471) | (2,501)
Total assets | 1,815,010 | 1,687,960 | 1,815,010 | 1,687,960
Depreciation and amortization | 0 | 0 | 0 | 0
Capital expenditure | 1,260 | 651,295 | 0 | 1,464,884
Goodwill | 0 | 0 | 0 | 0
Segment Total [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 23,840,391 | 38,811,622 | 104,160,873 | 120,907,839
Net revenue (intersegment) | 1,216,406 | 2,008,397 | 6,305,642 | 6,501,530
Income (loss) from operations before taxes | 5,898,126 | 13,955,617 | 36,055,500 | 39,633,684
Income taxes | 1,509,321 | 3,518,529 | 9,152,597 | 9,996,622
Income (loss) from operations after taxes | 4,388,805 | 10,437,088 | 26,902,903 | 29,637,062
Total assets | 402,529,046 | 377,524,177 | 402,529,046 | 377,524,177
Depreciation and amortization | 5,232,714 | 5,517,358 | 16,042,003 | 19,031,650
Capital expenditure | 563,760 | 15,878,317 | 623,735 | 16,749,192
Goodwill | 28,920,005 | 28,743,418 | 28,920,005 | 28,743,418
Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net revenue (external customers) | 0 | 0 | 0 | 0
Net revenue (intersegment) | 0 | 0 | 0 | 0
Income (loss) from operations before taxes | (1,062,874) | 583 | (1,924,779) | 319,956
Income taxes | 0 | 0 | 0 | 0
Income (loss) from operations after taxes | (1,062,874) | 583 | (1,924,779) | 319,956
Total assets | 40,136 | 183,416 | 40,136 | 183,416
Depreciation and amortization | 0 | 0 | 0 | 0
Capital expenditure | 0 | 0 | 0 | 0
Goodwill | $ 0 | $ 0 | $ 0 | $ 0

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