OPERATING SEGMENTS - Operating Profit (Loss) Per Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Sales to customers:
Sales	$ 100,915	$ 102,964	$ 92,560	$ 99,082	$ 92,463	$ 90,685	$ 90,501	$ 89,096	$ 395,521	$ 362,745	$ 376,089
Gross profit:
Gross profit	31,731	23,162	20,702	23,211	21,560	18,790	19,522	16,660	98,806	76,532	83,599
Depreciation and amortization:
Depreciation and amortization									12,961	11,572	11,362
Income (loss) before income taxes:
Income (loss) before income taxes	$ 15,252	$ 13,243	$ 11,040	$ 13,066	$ 15,883	$ 11,240	$ 10,553	$ 8,261	52,601	45,937	48,980
Foreign sources
Sales to customers:
Sales									23,905	19,372	19,782
Distillery Products
Sales to customers:
Sales									317,458	297,233	314,055
Gross profit:
Gross profit									77,960	65,952	71,793
Ingredient Solutions
Sales to customers:
Sales									78,063	65,512	62,034
Gross profit:
Gross profit									20,846	10,580	11,806
Operating Segments | Distillery Products
Depreciation and amortization:
Depreciation and amortization									9,916	8,974	8,739
Income (loss) before income taxes:
Income (loss) before income taxes									71,023	59,309	64,791
Operating Segments | Ingredient Solutions
Depreciation and amortization:
Depreciation and amortization									1,871	1,554	1,567
Income (loss) before income taxes:
Income (loss) before income taxes									18,024	8,051	9,336
Corporate
Depreciation and amortization:
Depreciation and amortization									1,174	1,044	1,056
Income (loss) before income taxes:
Income (loss) before income taxes									$ (36,446)	$ (21,423)	$ (25,147)