Quarterly report pursuant to Section 13 or 15(d)

Prepaid Expenses and Other Assets, Net (Details)

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Prepaid Expenses and Other Assets, Net (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]        
Restricted cash $ 3,826 $ 3,397 $ 3,995 $ 3,884
Marketable securities in deferred compensation plan 2,279 3,060    
Total 80,415 96,076    
Taxable REIT Subsidiary        
Property, Plant and Equipment [Line Items]        
Deferred tax assets, valuation allowance (480) (480)    
Corporate Office Properties, L.P.        
Property, Plant and Equipment [Line Items]        
Lease incentives, net 29,026 28,433    
Prepaid expenses 12,482 18,835    
Furniture, fixtures and equipment, net 7,620 7,823    
Construction contract costs in excess of billings, net 7,463 17,223    
Non-real estate equity investments 6,714 6,705    
Restricted cash 3,826 3,397 $ 3,995 $ 3,884
Deferred financing costs, net 3,351 3,633    
Deferred tax asset, net 2,279 2,328    
Other assets 5,375 4,639    
Total $ 78,136 $ 93,016