Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Tenant and other receivables, allowance	$ 18,278	$ 17,618
Deferred rents receivable, allowance	24,922	21,730
Debt and preferred equity investments, discount and deferred origination fees	$ 14,630	$ 18,759
Preferred stock, par value (in dollars per share)	$ 0.01
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	160,000,000	160,000,000
Common stock, shares issued (in shares)	100,319,000	100,063,000
Common stock, shares outstanding (in shares)	100,319,000	100,063,000
Treasury stock, shares (in shares)	1,055,000	87,000
Series I Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred stock, shares issued (in shares)	9,200,000	9,200,000
Preferred stock, shares outstanding (in shares)	9,200,000	9,200,000
SL Green Operating Partnership
Tenant and other receivables, allowance	$ 18,278	$ 17,618
Deferred rents receivable, allowance	24,922	21,730
Debt and preferred equity investments, discount and deferred origination fees	$ 14,630	$ 18,759
Limited partner interests in Operating Partnership, limited partner common units outstanding (shares)	4,495,000	3,746,000
SL Green partner's capital, general partner common units outstanding (shares)	1,047,000	1,035,000
SL Green partners' capital, limited partner common units outstanding (shares)	99,217,000	98,941,000
SL Green Operating Partnership | Series I Preferred Stock
Preferred units, liquidation preference (in dollars per share)	$ 25.00	$ 25.00
Preferred units, shares issued	9,200,000	9,200,000
Preferred units, shares outstanding	9,200,000	9,200,000