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Business Acquisitions - Additional Information (Details) - Argotec [Member]
1 Months Ended 3 Months Ended 12 Months Ended
Oct. 28, 2015
USD ($)
Apr. 30, 2016
USD ($)
Mar. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
property
Business Acquisition [Line Items]        
Cash consideration $ 282,700,000      
Fair value of receivables 16,100,000      
Gross contractual amounts of receivables $ 16,800,000      
Financing costs       $ 7,400,000
Easthampton, Massachusetts        
Business Acquisition [Line Items]        
Number of properties held for sale | property       1
Property held for sale, fair value       $ 1,000,000
Easthampton, Massachusetts | Subsequent Event [Member]        
Business Acquisition [Line Items]        
Gain (Loss) on Sale of Properties   $ 0    
Acquisition-related Costs [Member]        
Business Acquisition [Line Items]        
Acquisition-related costs     $ 200,000 $ 1,800,000