Acquisitions and Investments in Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Jun. 22, 2017	Jun. 20, 2016	Jun. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill			$ 167,535	$ 154,112
Uncle Matt's
Business Acquisition [Line Items]
Aggregate purchase price	$ 22,000
Intangible assets acquired	8,400
Goodwill	13,400
Uncle Matt's | Customer relationships
Business Acquisition [Line Items]
Finite lived intangible assets acquired	$ 1,800
Weighted-average amortization period	10 years
Friendly’s Holdings
Business Acquisition [Line Items]
Aggregate purchase price		$ 158,200
Finite lived intangible assets acquired		$ 81,700
Weighted-average amortization period		15 years
Unfavorable lease contract assumed		$ 5,400
Goodwill		67,300
Friendly’s Holdings | Customer relationships
Business Acquisition [Line Items]
Finite lived intangible assets acquired		$ 29,700
Trademarks | Uncle Matt's
Business Acquisition [Line Items]
Indefinite lived intangible assets acquired	$ 6,600