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Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income | $ 674,993 | $ 81,046 | $ 67,445
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Net gain on sale of real estate | (599,628) | 0 | 0
Depreciation and amortization, including amortization of debt issuance costs | 36,363 | 37,086 | 34,849
Straight-lining of rental income | (4,475) | (12,609) | (15,182)
Stock-based compensation expense | 300 | 300 | 0
Reversal of income tax liability | 0 | (2,561) | (5,113)
Other non-cash adjustments | 0 | 0 | 1,238
Changes in operating assets and liabilities: |  |  |
Tenant and other receivables, net | 234 | 1,672 | (2,065)
Other assets | 4,318 | (5,484) | (6,068)
Amounts due to Vornado | (2,405) | (2,445) | (12,881)
Accounts payable and accrued expenses | (107) | (4,547) | 13,273
Income tax liability of taxable REIT subsidiary | 29 | 87 | 704
Other liabilities | 85 | (31) | (178)
Net cash provided by operating activities | 109,707 | 92,514 | 76,022
CASH FLOWS FROM INVESTING ACTIVITIES |  |  |
Proceeds from sale of real estate | 714,054 | 0 | 0
Construction in progress and real estate additions | (7,351) | (14,415) | (42,310)
Proceeds from maturing short-term investments | 5,000 | 23,000 | 40,000
Restricted cash | (1,626) | (3,202) | 5,917
Purchases of short-term investments | 0 | (5,000) | (23,000)
Net cash provided by (used in) investing activities | 710,077 | 383 | (19,393)
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |
Dividends paid, including a special dividend of $623,178, or $122.00 per share in 2012 | (699,791) | (61,277) | (38,295)
Debt repayments | (265,016) | (508,479) | (68,619)
Acquisition of the noncontrolling interest | (7,800) | 0 | 0
Debt issuance costs | (400) | (6,142) | (57)
Proceeds from borrowing | 0 | 593,000 | 34,828
Distributions to the noncontrolling interest | 0 | (600) | 0
Net cash (used in) provided by financing activities | (973,007) | 16,502 | (72,143)
Net (decrease) increase in cash and cash equivalents | (153,223) | 109,399 | (15,514)
Cash and cash equivalents at beginning of year | 506,619 | 397,220 | 412,734
Cash and cash equivalents at end of year | 353,396 | 506,619 | 397,220
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION |  |  |
Cash payments for interest, of which $1,269 was capitalized in 2010 | 47,932 | 53,343 | 52,889
NON-CASH TRANSACTIONS |  |  |
Marketable securities received in connection with the sale of real estate | 30,000 | 0 | 0
Commission payable incurred in connection with the sale of real estate | 7,510 | 0 | 0
Change in unrealized net gain on securities available-for-sale | 1,206 | 0 | 0
Write-off of fully amortized and/or depreciated assets | 648 | 6,799 | 0
Non-cash additions to real estate included in accounts payable and accrued expenses | $ 221 | $ 3,052 | $ 0

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