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Derivative Instruments and Hedging Activities - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Derivative [Line Items]        
Change in value of interest rate swaps $ (4,131,000) $ 3,392,000 $ (28,502,000) $ 23,738,000
Fair value of derivative obligations 8,473,000   8,473,000  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | Cash Flow Hedges [Member]        
Derivative [Line Items]        
Change in value of interest rate swaps (4,131,000) $ 3,392,000 (28,502,000) $ 23,738,000
Estimated accumulated other comprehensive (loss) income reclassified to interest expense in the next twelve months     1,422,000  
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member] | 1633 Broadway [Member] | Cash Flow Hedges [Member]        
Derivative [Line Items]        
Aggregate notional amount 1,000,000,000.0   1,000,000,000.0  
Designated as Hedging Instrument [Member] | Interest Rate Swap March Two Thousand Eighteen [Member] | 1633 Broadway [Member] | Cash Flow Hedges [Member]        
Derivative [Line Items]        
Aggregate notional amount $ 400,000,000   $ 400,000,000