Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Commercial real estate properties, at cost:
Land and land interests	$ 1,877,492	$ 1,776,457
Building and improvements	4,477,073	4,353,081
Building leasehold and improvements	1,073,678	1,073,678
Commercial real estate properties, gross	7,428,243	7,203,216
Less: accumulated depreciation	(1,267,598)	(1,123,412)
Total commercial real estate properties, net	6,160,645	6,079,804
Cash and cash equivalents	50,026	34,691
Restricted cash	39,433	38,844
Tenant and other receivables, net of allowance of $5,593 and $5,820 in 2015 and 2014, respectively	35,256	25,778
Deferred rents receivable, net of allowance of $14,788 and $17,745 in 2015 and 2014, respectively	217,730	199,045
Related party receivable	90,000	0
Debt, preferred equity and other investments, net of discounts and deferred origination fees of $18,759 and $19,172 in 2015 and 2014, respectively	1,770,212	1,508,812
Deferred costs, net of accumulated amortization of $90,168 and $77,594 in 2015 and 2014, respectively	139,638	123,914
Other assets	355,807	292,885
Total assets	8,858,747	8,303,773
Liabilities
Mortgages and other loans payable	753,424	720,000
Revolving credit facility	994,000	385,000
Term loan and senior unsecured notes	1,988,106	1,788,001
Accrued interest payable and other liabilities	134,484	92,815
Accounts payable and accrued expenses	70,844	69,805
Deferred revenue	180,404	130,661
Deferred land leases payable	1,558	1,215
Dividends payable	807	0
Security deposits	39,007	36,195
Total liabilities	4,162,634	3,223,692
Commitments and contingencies	0	0
Preferred units	109,161	0
Capital
General partner capital	4,201,872	4,734,873
Limited partner capital	0	0
Accumulated other comprehensive loss	(2,216)	(3,106)
Total ROP partner's capital	4,199,656	4,731,767
Noncontrolling interests in other partnerships	387,296	348,314
Total capital	4,586,952	5,080,081
Total liabilities and capital	$ 8,858,747	$ 8,303,773