Related-Party Transactions (Details) (USD $)	12 Months Ended
	Dec. 31, 2014 Agreement		Dec. 31, 2013		Dec. 31, 2012
Related Party Transaction [Line Items]
Number of agreements	3
Anheuser Busch LLC [Member]
Related Party Transaction [Line Items]
A-B ownership of outstanding stock (in hundredths)	31.70%		32.00%
Number of agreements	2
Pre-modification fee per case equivalent (in dollars per case equivalent)	$ 0.74
Post-modification margin fee per case equivalent (in dollars per case equivalent)	$ 0.25
Margin fees after post modification date(in dollars per case equivalent)	$ 0.75
Transactions with A-B [Abstract]
Gross sales to A-B	$ 178,805,000		$ 161,010,000		$ 149,492,000
Margin fee paid to A-B, classified as a reduction of Sales	2,644,000		2,009,000		1,864,000
Sales to FSB through a contract brewing arrangement, classified in Sales	0	[1]	0	[1]	3,083,000	[1]
Sales to FSB pursuant to termination agreement discussed below	0		0		838,000
Handling, inventory management, royalty and other fees paid to A-B, classified in Cost of sales	393,000		402,000		449,000
Amounts received from A-B for lost keg fees and forfeited deposits, included as a reduction of Property, equipment and leasehold improvements, net	0		0		122,000
Amounts due to or from A-B [Abstract]
Amounts due from A-B related to beer sales pursuant to the A-B Distributor Agreement	7,846,000		8,457,000
Refundable deposits due to A-B	(2,629,000)		(2,728,000)
Amounts due to A-B for services rendered	(1,821,000)		(1,852,000)
Net amount due from A-B	3,396,000		3,877,000
Fulton Street Brewery [Member]
Transactions with A-B [Abstract]
FSB ownership (in hundredths)	42.00%
Monthly payment from FSB from termination agreement	$ 70,000

[1] We owned 42% of FSB prior to it becoming a wholly owned subsidiary of A-B in May 2011 and, accordingly, transactions with FSB are considered to be related party transactions in all periods.