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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Feb. 01, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Sep. 30, 2018
Jun. 30, 2019
Sep. 30, 2019
Sep. 30, 2018
Property, Plant and Equipment [Line Items]                
Impairment of long-lived assets   $ 0 $ 900   $ 0   $ 13,485 $ 747
Interest expensed   700     700   2,300 1,800
Compensation and travel expense capitalized   100     100   400 400
Payments for asset acquisitions             35,161 0
Fees paid related to unused bridge loan   $ 0     $ 0   2,665 $ 0
Bridge Loan                
Property, Plant and Equipment [Line Items]                
Fees paid related to unused bridge loan     $ 2,700          
Port Fresh Holdings, LLC                
Property, Plant and Equipment [Line Items]                
Payments for asset acquisitions $ 35,900           $ 35,923  
Partially Used Warehouse                
Property, Plant and Equipment [Line Items]                
Impairment of long-lived assets       $ 9,600        
Percentage of facility to be demolished           75.00%    
Idle Warehouse                
Property, Plant and Equipment [Line Items]                
Impairment of long-lived assets       $ 2,900