Related Party Transactions - Agreements with Anheuser-Busch, LLC (Details) $ / shares in Units, $ in Thousands |
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3 Months Ended |
4 Months Ended |
9 Months Ended |
12 Months Ended |
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Aug. 23, 2016
USD ($)
barrel
$ / shares
$ / case
$ / barrel
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Dec. 31, 2016
USD ($)
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Dec. 31, 2018
USD ($)
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Dec. 31, 2017
USD ($)
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| Related Party Transaction [Line Items] |
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| Proposed sale of stock, price per share minimum on or prior to August 23, 2017 (usd per share) | $ / shares |
$ 22.00
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| Proposed sale of stock, price per share minimum during August 23, 2017 to August 23, 2018 (usd per share) | $ / shares |
23.25
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| Proposed sale of stock, price per share minimum on or after August 24, 2018 (usd per share) | $ / shares |
$ 24.50
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| Anheuser-Busch Worldwide Investments, LLC (ABWI) | International Distribution Agreement | Forecast |
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| Related Party Transaction [Line Items] |
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| Fees to be collected from related party per agreement | $ |
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$ 3,000
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$ 6,000
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$ 5,000
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| Anheuser-Busch Worldwide Investments, LLC (ABWI) | International Distribution Agreement | Minimum |
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| Related Party Transaction [Line Items] |
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| Royalty fee per barrel (usd per barrel) | $ / barrel |
30
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| Anheuser-Busch Worldwide Investments, LLC (ABWI) | International Distribution Agreement | Maximum |
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| Related Party Transaction [Line Items] |
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| Royalty fee per barrel (usd per barrel) | $ / barrel |
40
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| Affiliated entity | A - B Commercial Strategies, LLC (ABCS) | Contract Brewing Agreement |
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| Related Party Transaction [Line Items] |
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| Number of barrels to be brewed, bottled and packaged by affiliate (maximum) | barrel |
300,000
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| Cost savings per barrel required to share cost savings per agreement | $ / barrel |
10.00
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| Number of days for prior written notice to terminate agreement |
90 days
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| Number of days following receipt of qualifying offer |
120 days
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| Period in which affiliate can terminate agreement |
3 years
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| Affiliated entity | Anheuser-Busch Worldwide Investments, LLC (ABWI) |
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| Related Party Transaction [Line Items] |
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| Fees to be collected from related party per agreement | $ |
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$ 900
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$ 0
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$ 900
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$ 0
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| Affiliated entity | Anheuser-Busch Worldwide Investments, LLC (ABWI) | International Distribution Agreement |
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| Related Party Transaction [Line Items] |
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| Number of days for prior written notice to terminate agreement |
90 days
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| Number of days following receipt of qualifying offer |
120 days
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| Period to lapse for possible one-time payment to be paid |
3 years
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| Possible one-time payment to be paid by affiliate to the Company | $ |
$ 20,000
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| Affiliated entity | Anheuser-Busch, LLC | Master Distributor Agreement [Member] |
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| Related Party Transaction [Line Items] |
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| Number of days following receipt of qualifying offer |
120 days
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| Period in which affiliate can terminate agreement |
3 years
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| Margin fee per case (usd per case) | $ / case |
0.25
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| Margin fee per case removed by amended agreement (usd per case) | $ / case |
0.75
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| Amount per case to be reinvested (usd per case) | $ / case |
0.25
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