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13. BUSINESS SEGMENTS (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) |  | $ 2,247,267 | $ 32,788,493
Net revenue (intersegment) |  | 0 | 2,178,493
Income (loss) from operations before taxes (benefit) |  | (8,296,980) | 10,812,997
Income tax expense (benefit) |  | (1,193,746) | 2,821,826
Income (loss) from operations after income taxes (benefit) |  | (7,103,234) | 7,991,171
Total assets |  | 397,339,967 | 378,335,212
Depreciation and amortization |  | 4,757,530 | 5,439,098
Capital expenditures |  | 121,710 | 59,975
Goodwill |  | 30,524,646 | 27,820,174
Bromine Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) | [1] | 0 | 13,922,394
Net revenue (intersegment) | [1] | 0 | 2,178,493
Income (loss) from operations before taxes (benefit) | [1] | (5,590,555) | 5,271,933
Income tax expense (benefit) | [1] | (1,391,152) | 1,330,103
Income (loss) from operations after income taxes (benefit) | [1] | (4,199,403) | 3,941,830
Total assets | [1] | 149,458,703 | 155,178,113
Depreciation and amortization | [1] | 3,719,712 | 3,998,581
Capital expenditures | [1] | 93,174 | 0
Goodwill | [1] | 0 | 0
Crude Salt Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) | [1] | 1,638,493 | 1,813,778
Net revenue (intersegment) | [1] | 0 | 0
Income (loss) from operations before taxes (benefit) | [1] | (807,884) | 885,888
Income tax expense (benefit) | [1] | (201,971) | 223,582
Income (loss) from operations after income taxes (benefit) | [1] | (605,913) | 662,306
Total assets | [1] | 52,746,108 | 28,641,633
Depreciation and amortization | [1] | 913,350 | 454,447
Capital expenditures | [1] | 14,179 | 0
Goodwill | [1] | 0 | 0
Chemical Products Segment [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) |  | 608,774 | 17,052,321
Net revenue (intersegment) |  | 0 | 0
Income (loss) from operations before taxes (benefit) |  | (674,771) | 4,946,177
Income tax expense (benefit) |  | 399,377 | 1,268,141
Income (loss) from operations after income taxes (benefit) |  | (1,074,148) | 3,678,036
Total assets |  | 192,807,722 | 192,675,503
Depreciation and amortization |  | 124,468 | 986,070
Capital expenditures |  | 0 | 0
Goodwill |  | 30,524,646 | 27,820,174
Natural Gas [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) |  | 0 | 0
Net revenue (intersegment) |  | 0 | 0
Income (loss) from operations before taxes (benefit) |  | (35,655) | (23,758)
Income tax expense (benefit) |  | 0 | 0
Income (loss) from operations after income taxes (benefit) |  | (35,655) | (23,758)
Total assets |  | 2,162,119 | 1,802,854
Depreciation and amortization |  | 0 | 0
Capital expenditures |  | 14,357 | 59,975
Goodwill |  | 0 | 0
Segment Total [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) |  | 2,247,267 | 32,788,493
Net revenue (intersegment) |  | 0 | 2,178,493
Income (loss) from operations before taxes (benefit) |  | (7,108,865) | 11,080,240
Income tax expense (benefit) |  | (1,193,746) | 2,821,826
Income (loss) from operations after income taxes (benefit) |  | (5,915,119) | 8,258,414
Total assets |  | 397,174,652 | 378,298,103
Depreciation and amortization |  | 4,757,530 | 5,439,098
Capital expenditures |  | 121,710 | 59,975
Goodwill |  | 30,524,646 | 27,820,174
Corporate [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Net revenue (external customers) |  | 0 | 0
Net revenue (intersegment) |  | 0 | 0
Income (loss) from operations before taxes (benefit) |  | (1,188,115) | (267,243)
Income tax expense (benefit) |  | 0 | 0
Income (loss) from operations after income taxes (benefit) |  | (1,188,115) | (267,243)
Total assets |  | 165,315 | 37,109
Depreciation and amortization |  | 0 | 0
Capital expenditures |  | 0 | 0
Goodwill |  | $ 0 | $ 0
[1] | Certain common production overheads, operating and administrative expenses and asset items (mainly cash and certain office equipment) of bromine and crude salt segments in SCHC were split by reference to the average selling price and production volume of respective segment.

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