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14. BUSINESS SEGMENTS (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Segment Reporting Information [Line Items]        
Net revenue (external customers) $ 4,594 $ 47,531,989 $ 2,251,861 $ 80,320,482
Net revenue (intersegment) 0 2,910,743 0 5,089,236
Income (loss) from operations before taxes (benefit) (6,831,607) 18,482,472 (15,128,587) 29,295,469
Income tax expense (benefit) (1,883,241) 4,821,450 (3,076,987) 7,643,276
Income (loss) from operations after income taxes (benefit) (4,948,366) 13,661,022 (12,051,600) 21,652,193
Total assets 370,843,729 405,264,843 370,843,729 405,264,843
Depreciation and amortization 4,753,984 5,370,190 9,511,515 10,809,289
Capital expenditures 10,212,011   10,333,721  
Goodwill 29,010,218 28,332,661 29,010,218 28,332,661
Bromine Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 0 18,423,133 0 32,345,527
Net revenue (intersegment) 0 2,910,743 0 5,089,236
Income (loss) from operations before taxes (benefit) (5,577,272) 9,740,981 (11,167,828) 15,012,915
Income tax expense (benefit) (1,579,514) 2,464,085 (2,970,666) 3,794,188
Income (loss) from operations after income taxes (benefit) (3,997,758) 7,276,896 (8,197,162) 11,218,727
Total assets 138,510,016 162,696,276 138,510,016 162,696,276
Depreciation and amortization 4,018,318 3,794,600 7,738,030 7,793,181
Capital expenditures 7,813,714   7,906,888  
Goodwill 0 0 0 0
Crude Salt Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 0 2,521,883 1,638,493 4,335,661
Net revenue (intersegment) 0 0 0 0
Income (loss) from operations before taxes (benefit) (1,731,592) 1,051,202 (2,539,475) 1,937,089
Income tax expense (benefit) (240,367) 245,164 (442,338) 468,746
Income (loss) from operations after income taxes (benefit) (1,491,225) 806,038 (2,097,137) 1,468,343
Total assets 47,572,477 32,749,355 47,572,477 32,749,355
Depreciation and amortization 611,499 624,226 1,524,850 1,078,673
Capital expenditures 1,189,075   1,203,254  
Goodwill 0 0 0 0
Chemical Products Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 4,594 26,586,973 613,368 43,639,294
Net revenue (intersegment) 0 0 0 0
Income (loss) from operations before taxes (benefit) (727,595) 8,318,480 (1,402,366) 13,264,657
Income tax expense (benefit) (63,360) 2,112,201 336,017 3,380,342
Income (loss) from operations after income taxes (benefit) (664,235) 6,206,279 (1,738,383) 9,884,315
Total assets 182,669,040 207,885,555 182,669,040 207,885,555
Depreciation and amortization 124,167 951,364 248,635 1,937,435
Capital expenditures 1,192,963   1,192,963  
Goodwill 29,010,218 28,332,661 29,010,218 28,332,661
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 (benefit) (45,295) (33,529) (80,950) (57,287)
Income tax expense (benefit) 0 0 0 0
Income (loss) from operations after income taxes (benefit) (45,295) (33,529) (80,950) (57,287)
Total assets 2,011,378 1,819,284 2,011,378 1,819,284
Depreciation and amortization 0 0 0 0
Capital expenditures 16,259   30,616  
Goodwill 0 0 0 0
Segment Total [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 4,594 47,531,989 2,251,861 80,320,482
Net revenue (intersegment) 0 2,910,743 0 5,089,236
Income (loss) from operations before taxes (benefit) (8,081,754) 19,077,134 (15,190,619) 30,157,374
Income tax expense (benefit) (1,883,241) 4,821,450 (3,076,987) 7,643,276
Income (loss) from operations after income taxes (benefit) (6,198,513) 14,255,684 (12,113,632) 22,514,098
Total assets 370,762,911 405,150,470 370,762,911 405,150,470
Depreciation and amortization 4,753,984 5,370,190 9,511,515 10,809,289
Capital expenditures 10,212,011   10,333,721  
Goodwill 29,010,218 28,332,661 29,010,218 28,332,661
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 (benefit) 1,250,147 (594,662) 62,032 (861,905)
Income tax expense (benefit) 0 0 0 0
Income (loss) from operations after income taxes (benefit) 1,250,147 (594,662) 62,032 (861,905)
Total assets 80,818 114,373 80,818 114,373
Depreciation and amortization 0 0 0 0
Goodwill $ 0 $ 0 $ 0 $ 0