Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Commercial real estate properties, at cost:
Land and land interests		$ 1,774,899	$ 2,357,051
Building and improvements		5,268,484	6,351,012
Building leasehold and improvements		1,423,107	1,450,614
Properties under capital lease		47,445	47,445
Total commercial real estate properties, at cost		8,513,935	10,206,122
Less: accumulated depreciation		(2,099,137)	(2,300,116)
Total commercial real estate properties, net		6,414,798	7,906,006
Assets held for sale		0	338,354
Cash and cash equivalents		129,475	127,888
Restricted cash		149,638	122,138
Investments in marketable securities		28,638	28,579
Tenant and other receivables, net of allowance of $15,702 and $18,637 in 2018 and 2017, respectively		41,589	57,644
Related party receivables		28,033	23,039
Deferred rents receivable, net of allowance of $15,457 and $17,207 in 2018 and 2017, respectively		335,985	365,337
Debt and preferred equity investments, net of discounts and deferred origination fees of $22,379 and $25,507 in 2018 and 2017, respectively, and allowance of $5,750 in 2018		2,099,393	2,114,041
Investments in unconsolidated joint ventures		3,019,020	2,362,989
Deferred costs, net		209,110	226,201
Other assets		295,679	310,688
Total assets	[1]	12,751,358	13,982,904
Liabilities
Mortgages and other loans payable, net		1,961,240	2,837,282
Revolving credit facility, net		492,196	30,336
Unsecured term loans, net		1,493,051	1,491,575
Unsecured notes, net		1,495,214	1,395,939
Accrued interest payable		23,154	38,142
Other liabilities		116,566	188,005
Accounts payable and accrued expenses		147,060	137,142
Deferred revenue		94,453	208,119
Capital lease obligations		43,616	42,843
Deferred land leases payable		3,603	3,239
Dividend and distributions payable		80,430	85,138
Security deposits		64,688	67,927
Liabilities related to assets held for sale		0	4,074
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[1]	6,115,271	6,629,761
Commitments and contingencies
Noncontrolling interests in Operating Partnership		387,805	461,954
Preferred units		300,427	301,735
Equity
Series I Preferred Stock, $0.01 par value, $25.00 liquidation preference, 9,200 issued and outstanding at both December 31, 2018 and 2017		221,932	221,932
Common stock, $0.01 par value, 160,000 shares authorized and 84,739 and 93,858 issued and outstanding at December 31, 2018 and 2017, respectively (including 1,055 and 1,055 shares held in treasury at December 31, 2018 and 2017, respectively)		847	939
Additional paid-in-capital		4,508,685	4,968,338
Treasury stock at cost		(124,049)	(124,049)
Accumulated other comprehensive income		15,108	18,604
Retained earnings		1,278,998	1,139,329
Total SL Green stockholders' equity		5,901,521	6,225,093
Noncontrolling interests in other partnerships		46,334	364,361
Total equity		5,947,855	6,589,454
SL Green stockholders equity:
Total liabilities and equity/capital		12,751,358	13,982,904
SL Green Operating Partnership
Commercial real estate properties, at cost:
Land and land interests		1,774,899	2,357,051
Building and improvements		5,268,484	6,351,012
Building leasehold and improvements		1,423,107	1,450,614
Properties under capital lease		47,445	47,445
Total commercial real estate properties, at cost		8,513,935	10,206,122
Less: accumulated depreciation		(2,099,137)	(2,300,116)
Total commercial real estate properties, net		6,414,798	7,906,006
Assets held for sale		0	338,354
Cash and cash equivalents		129,475	127,888
Restricted cash		149,638	122,138
Investments in marketable securities		28,638	28,579
Tenant and other receivables, net of allowance of $15,702 and $18,637 in 2018 and 2017, respectively		41,589	57,644
Related party receivables		28,033	23,039
Deferred rents receivable, net of allowance of $15,457 and $17,207 in 2018 and 2017, respectively		335,985	365,337
Debt and preferred equity investments, net of discounts and deferred origination fees of $22,379 and $25,507 in 2018 and 2017, respectively, and allowance of $5,750 in 2018		2,099,393	2,114,041
Investments in unconsolidated joint ventures		3,019,020	2,362,989
Deferred costs, net		209,110	226,201
Other assets		295,679	310,688
Total assets	[2]	12,751,358	13,982,904
Liabilities
Mortgages and other loans payable, net		1,961,240	2,837,282
Revolving credit facility, net		492,196	30,336
Unsecured term loans, net		1,493,051	1,491,575
Unsecured notes, net		1,495,214	1,395,939
Accrued interest payable		23,154	38,142
Other liabilities		116,566	188,005
Accounts payable and accrued expenses		147,060	137,142
Deferred revenue		94,453	208,119
Capital lease obligations		43,616	42,843
Deferred land leases payable		3,603	3,239
Dividend and distributions payable		80,430	85,138
Security deposits		64,688	67,927
Liabilities related to assets held for sale		0	4,074
Junior subordinated deferrable interest debentures held by trusts that issued trust preferred securities		100,000	100,000
Total liabilities	[2]	6,115,271	6,629,761
Limited partner interests in SLGOP (4,131 and 4,453 limited partner common units outstanding at December 31, 2018 and 2017, respectively)		387,805	461,954
Preferred units		300,427	301,735
Equity
Accumulated other comprehensive income		15,108	18,604
SL Green stockholders equity:
Series I Preferred Units, $25.00 liquidation preference, 9,200 issued and outstanding at both December 31, 2018 and 2017		221,932	221,932
SL Green partners' capital (878 and 973 general partner common units, and 82,806 and 91,831 limited partner common units outstanding at December 31, 2018 and 2017, respectively)		5,664,481	5,984,557
Total SLGOP partners' capital		5,901,521	6,225,093
Noncontrolling interests in other partnerships		46,334	364,361
Total capital		5,947,855	6,589,454
Total liabilities and equity/capital		$ 12,751,358	$ 13,982,904

[1] The Company's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs, excluding the Operating Partnership: $110.0 million and $398.0 million of land, $0.3 billion and $1.4 billion of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $47.4 million and $47.4 million of properties under capital lease, $42.2 million and $330.9 million of accumulated depreciation, $721.3 million and $221.0 million of other assets included in other line items, $140.8 million and $628.9 million of real estate debt, net, $0.4 million and $2.5 million of accrued interest payable, $43.6 million and $42.8 million of capital lease obligations, and $18.4 million and $56.8 million of other liabilities included in other line items as of December 31, 2018 and December 31, 2017, respectively.

[2] The Operating Partnership's consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs"). See Note 2. The consolidated balance sheets include the following amounts related to our consolidated VIEs: $110.0 million and $398.0 million of land, $0.3 billion and $1.4 billion of building and improvements, $2.0 million and $2.0 million of building and leasehold improvements, $47.4 million and $47.4 million of properties under capital lease, $42.2 million and $330.9 million of accumulated depreciation, $721.3 million and $221.0 million of other assets included in other line items, $140.8 million and $628.9 million of real estate debt, net, $0.4 million and $2.5 million of accrued interest payable, $43.6 million and $42.8 million of capital lease obligations, and $18.4 million and $56.8 million of other liabilities included in other line items as of December 31, 2018 and December 31, 2017, respectively.