Segment Results and Concentrations (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 47,487	$ 44,302
Gross profit	$ 15,071	$ 12,669
Gross margin (in hundredths)	31.70%	28.60%
Beer Related | Operating Segments
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 41,476	$ 37,851
Gross profit	$ 14,710	$ 12,270
Gross margin (in hundredths)	35.50%	32.40%
Brewpubs | Operating Segments
Net sales, gross profit and gross margin by segment [Abstract]
Net sales	$ 6,011	$ 6,451
Gross profit	$ 361	$ 399
Gross margin (in hundredths)	6.00%	6.20%
Sales
Sales and receivables from Anheuser-Busch, LLC [Abstract]
Percentage of concentration	76.60%	70.60%
Accounts Receivable
Sales and receivables from Anheuser-Busch, LLC [Abstract]
Percentage of concentration	73.80%		74.40%