Business Combinations - Acquisition of Lanier (Details) - USD ($) $ in Thousands	May 01, 2019	Sep. 30, 2019	Dec. 31, 2018
Assets
Goodwill		$ 310,640	$ 186,095
Lanier Cold Storage
Business Acquisition [Line Items]
Fair value of assets and liabilities acquired	$ 82,600
Assets
Land	4,580
Building and improvements	41,396
Machinery and equipment	18,331
Cash and cash equivalents	646
Accounts receivable	1,381
Operating and finance lease right-of-use assets	82
Goodwill	7,900
Acquired identifiable intangibles:
Other assets	75
Total assets	84,783
Liabilities
Accounts payable and accrued expenses	1,497
Deferred tax liability	650
Operating and finance lease obligations	82
Total liabilities	2,229
Total consideration	82,554
Deferred tax liability, intangible assets	100
Customer relationships | Lanier Cold Storage
Acquired identifiable intangibles:
Identifiable intangibles	$ 10,392
Liabilities
Weighted average remaining intangible amortization life (in months)	25 years