Segment Results and Concentrations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 52,889	$ 56,638	$ 162,199	$ 161,490
Gross profit	$ 16,699	$ 19,384	$ 53,897	$ 50,382
Gross margin (in hundredths)	31.60%	34.20%	33.20%	31.20%
Beer Related | Operating Segments
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 46,723	$ 49,073	$ 143,921	$ 140,359
Gross profit	$ 16,261	$ 18,679	$ 52,913	$ 48,569
Gross margin (in hundredths)	34.80%	38.10%	36.80%	34.60%
Brewpubs | Operating Segments
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 6,166	$ 7,565	$ 18,278	$ 21,131
Gross profit	$ 438	$ 705	$ 984	$ 1,813
Gross margin (in hundredths)	7.10%	9.30%	5.40%	8.60%
Sales
Sales and receivables from Anheuser-Busch, LLC [Abstract]
Percentage of concentration	76.90%	77.20%	77.20%	75.20%
Accounts Receivable
Sales and receivables from Anheuser-Busch, LLC [Abstract]
Percentage of concentration			70.90%		74.40%