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Related Party Transactions - Transactions with Anheuser-Busch, LLC (A-B), Ambev and Anheuser-Busch Worldwide Investments, LLC (ABWI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Percentage of stock owned by A-B	31.40%		31.40%
Affiliated entity \| Anheuser-Busch, LLC (A-B) and Ambev \| Gross sales
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	$ 37,568	$ 32,641
Affiliated entity \| Anheuser-Busch Worldwide Investments, LLC (ABWI) \| International distribution fees
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	850	850
Affiliated entity \| Anheuser-Busch Worldwide Investments, LLC (ABWI) \| International Distribution Agreement [Member]
Related Party Transaction [Line Items]
International distribution fee, recorded as deferred revenue in Other accrued expenses	650		$ 400
Affiliated entity \| Anheuser-Busch Companies, LLC (ABC) \| Contract Brewing fee earned
Related Party Transaction [Line Items]
Sales revenue or fee earned from related party	463	0
Affiliated entity \| Anheuser-Busch, LLC (A-B)
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Net amount due from related party	13,106		14,208
Affiliated entity \| Anheuser-Busch, LLC (A-B) \| Margin fee paid, classified as a reduction of Sales
Related Party Transaction [Line Items]
Fee paid to related party	518	488
Affiliated entity \| Anheuser-Busch, LLC (A-B) \| Inventory management and other fees paid, classified in Cost of sales
Related Party Transaction [Line Items]
Fee paid to related party	90	$ 91
Affiliated entity \| Anheuser-Busch, LLC (A-B) \| Amounts due related to beer sales
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amount due from related parties	19,587		15,663
Affiliated entity \| Anheuser-Busch, LLC (A-B) \| Refundable deposits
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amounts due to related party	(1,345)		(1,619)
Affiliated entity \| Anheuser-Busch, LLC (A-B) \| Services rendered
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amounts due to related party	(6,636)		(4,836)
Affiliated entity \| Anheuser-Busch Worldwide Investments, LLC (ABWI) And Anheuser Busch, LLC (A-B) \| International distribution fees
Amounts due to or from Anheuser-Busch, LLC [Abstract]
Amount due from related parties	$ 1,500		$ 5,000