Operating Segments - Operating Profit (Loss) Per Segment (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Net sales to customers:
Revenue, Net	$ 88,193	$ 86,333	$ 85,753	$ 87,169	$ 81,145	$ 79,891	$ 80,392	$ 76,835	$ 347,448	$ 318,263	$ 327,604
Gross profit:
Gross profit	19,525	18,625	18,825	19,041	17,585	15,121	15,531	17,046	76,016	65,283	58,533
Depreciation and amortization:
Depreciation and amortization									11,308	11,253	12,382
Income (loss) before income taxes:
Income (loss) before income taxes	$ 10,282	$ 21,628	$ 9,316	$ 11,532	$ 12,060	$ 11,848	$ 9,878	$ 10,931	52,758	44,717	38,418
Operating Segments | Distillery products
Net sales to customers:
Revenue, Net									291,008	265,243	270,225
Gross profit:
Gross profit									66,817	56,836	50,662
Depreciation and amortization:
Depreciation and amortization									8,490	8,371	8,900
Income (loss) before income taxes:
Income (loss) before income taxes									60,424	53,583	49,097
Operating Segments | Ingredient solutions
Net sales to customers:
Revenue, Net									56,440	53,020	57,379
Gross profit:
Gross profit									9,199	8,447	7,871
Depreciation and amortization:
Depreciation and amortization									1,660	1,655	2,111
Income (loss) before income taxes:
Income (loss) before income taxes									6,613	5,836	5,636
Corporate
Depreciation and amortization:
Depreciation and amortization									1,158	1,227	1,371
Income (loss) before income taxes:
Income (loss) before income taxes									$ (14,279)	$ (14,702)	$ (16,315)