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Long-Term Debt, Net of Deferred Financing Costs - Narrative (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Debt Instrument [Line Items]      
Unamortized deferred financing costs $ (6,500,000)   $ (7,100,000)
Amortization of financing costs $ 512,000 $ 513,000  
Weighted average interest rate 2.30%   3.01%
Credit Facility Amendment [Member]      
Debt Instrument [Line Items]      
Amortization of financing costs $ 512,000 $ 513,000  
Unsecured Debt [Member] | The Notes [Member]      
Debt Instrument [Line Items]      
Notes payable, net of deferred financing costs 225,000,000   $ 225,000,000
Term Loan [Member] | Credit Facility Amendment [Member]      
Debt Instrument [Line Items]      
Notes payable, net of deferred financing costs 400,000,000   400,000,000
Revolving Credit Facility [Member] | Credit Facility Amendment [Member]      
Debt Instrument [Line Items]      
Notes payable, net of deferred financing costs     250,000,000
Revolving Credit Facility [Member] | Secured Debt [Member]      
Debt Instrument [Line Items]      
Fair value of amount outstanding $ 178,000,000   $ 52,000,000