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15. BUSINESS SEGMENTS (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Segment Reporting Information [Line Items]        
Net revenue (external customers) $ 47,600,767 $ 49,350,070 $ 82,096,217 $ 84,260,899
Net revenue (intersegment) 2,670,931 2,518,562 4,493,133 4,024,239
Income (loss) from operations before taxes 17,331,122 14,561,389 25,997,440 21,672,040
Income taxes 4,210,422 3,843,298 6,478,093 5,714,786
Income (loss) from operations after taxes 13,120,700 10,718,091 19,519,347 15,957,254
Total assets 374,775,781 369,025,753 374,775,781 369,025,753
Depreciation and amortization 6,644,571 7,527,681 13,514,292 14,906,699
Capital expenditures 813,589 870,875
Goodwill 28,944,958 31,396,066 28,944,958 31,396,066
Bromine Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 18,480,605 15,092,861 31,650,133 26,126,110
Net revenue (intersegment) 2,670,931 2,518,562 4,493,133 4,024,239
Income (loss) from operations before taxes 8,199,652 4,505,928 11,205,170 4,642,886
Income taxes 1,810,252 951,896 2,553,622 1,027,302
Income (loss) from operations after taxes 6,389,400 3,554,032 8,651,548 3,615,584
Total assets 149,221,327 142,221,356 149,221,327 142,221,356
Depreciation and amortization 4,144,546 4,501,603 8,512,338 9,236,903
Capital expenditures 52,777
Goodwill
Crude Salt Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 2,305,688 2,909,342 4,072,296 4,873,073
Net revenue (intersegment)
Income (loss) from operations before taxes (10,099) (4,027) 217,514 183,509
Income taxes 235,779 171,681 299,283 180,738
Income (loss) from operations after taxes (245,878) (175,708) (81,769) 2,771
Total assets 30,673,443 40,055,235 30,673,443 40,055,235
Depreciation and amortization 1,339,696 1,589,490 2,532,362 2,990,787
Capital expenditures 4,509
Goodwill
Chemical Products Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 26,814,474 31,347,867 53,261,716
Net revenue (intersegment)
Income (loss) from operations before taxes 8,531,677 10,765,654 (25) 17,812,394
Income taxes 2,164,391 2,719,721 4,506,746
Income (loss) from operations after taxes 6,367,286 8,045,933 (25) 13,305,648
Total assets 193,703,787 186,715,430 1,058,651 186,715,430
Depreciation and amortization 1,160,329 1,436,588 2,678,979
Capital expenditures 813,589
Goodwill 31,396,066 31,396,066
Natural Gas Segment [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 46,373,788
Net revenue (intersegment)
Income (loss) from operations before taxes (25) 14,255,408
Income taxes 3,625,188
Income (loss) from operations after taxes (25) 10,630,220
Total assets 1,058,651 193,703,787
Depreciation and amortization 2,469,592
Capital expenditures 813,589
Goodwill 28,944,958 28,944,958
Segment Total [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers) 47,600,767 49,350,070 82,096,217 84,260,899
Net revenue (intersegment) 2,670,931 2,518,562 4,493,133 4,024,239
Income (loss) from operations before taxes 16,721,205 15,267,555 25,678,067 22,638,789
Income taxes 4,210,422 3,843,298 6,478,093 5,714,786
Income (loss) from operations after taxes 12,510,783 11,424,257 19,199,974 16,924,003
Total assets 374,657,208 368,992,021 374,657,208 368,992,021
Depreciation and amortization 6,644,571 7,527,681 13,514,292 14,906,669
Capital expenditures 813,589 870,875
Goodwill 28,944,958 31,396,066 28,944,958 31,396,066
Corporate [Member]        
Segment Reporting Information [Line Items]        
Net revenue (external customers)
Net revenue (intersegment)
Income (loss) from operations before taxes 609,917 (706,166) 319,373 (966,749)
Income taxes
Income (loss) from operations after taxes 609,917 (706,166) 319,373 (966,749)
Total assets 118,573 33,732 118,573 33,732
Depreciation and amortization
Capital expenditures
Goodwill