Derivative and Hedging Activities - Schedule of Interest Rate Swap Agreements (Details)
Dec. 31, 2018
USD ($)
Derivative [Line Items]  
Fair Value of Liability $ 7,159,000
Designated as Hedging Instrument | Interest Rate Swap At 2.8140% Fixed Interest Rate  
Derivative [Line Items]  
Notional Amount $ 200,000,000
Fixed Interest Rate 2.814%
Designated as Hedging Instrument | Interest Rate Swap At 2.8174% Fixed Interest Rate  
Derivative [Line Items]  
Notional Amount $ 100,000,000
Fixed Interest Rate 2.8174%
Designated as Hedging Instrument | Interest Rate Swap At 2.8180% Fixed Interest Rate  
Derivative [Line Items]  
Notional Amount $ 100,000,000
Fixed Interest Rate 2.818%
Accounts Payable and Accrued Liabilities | Designated as Hedging Instrument | Interest Rate Swap At 2.8140% Fixed Interest Rate  
Derivative [Line Items]  
Fair Value of Liability $ 3,559,000
Accounts Payable and Accrued Liabilities | Designated as Hedging Instrument | Interest Rate Swap At 2.8174% Fixed Interest Rate  
Derivative [Line Items]  
Fair Value of Liability 1,801,000
Accounts Payable and Accrued Liabilities | Designated as Hedging Instrument | Interest Rate Swap At 2.8180% Fixed Interest Rate  
Derivative [Line Items]  
Fair Value of Liability $ 1,799,000