Mergers and Acquisitions - Okanagan - Fair Value of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Apr. 30, 2015
Business Acquisition [Line Items]
Goodwill	$ 153,289	$ 157,175	$ 165,169
Okanagan Specialty Fruits Inc.
Business Acquisition [Line Items]
Cash				$ 58
Trade receivables				16
Other receivables				49
Property, plant, and equipment				32
Intangible assets				36,500
Total assets acquired				36,655
Accounts payable				181
Deferred revenue				181
Deferred tax liabilities				8,847
Total liabilities assumed				9,209
Net assets acquired				27,446
Goodwill				13,487
Total consideration				$ 40,933