LIQUIDITY AND CAPITAL RESOURCES
Property rental income is our primary source of cash flow and is dependent upon the occupancy and rental rates of our properties. Other sources of liquidity to fund cash requirements include proceeds from debt financings, including mortgage loans, senior unsecured borrowings, and our revolving credit facilities; proceeds from the issuance of equity securities; and asset sales. Our cash requirements include property operating expenses, capital improvements, tenant improvements, leasing commissions, distributions to unitholders, as well as acquisition and development costs. Our cash and cash equivalents were $846,254,000 at September 30, 2010, a $310,775,000 increase over the balance at December 31, 2009. This increase resulted from $594,721,000 of net cash provided by operating activities, $51,097,000 of net cash provided by investing activities, partially offset by $335,043,000 of net cash used in financing activities. Our consolidated outstanding debt was $11,110,047,000 at September 30, 2010, a $170,432,000 increase over the balance at December 31, 2009.
We anticipate that cash flow from continuing operations over the next twelve months will be adequate to fund our business operations, cash distributions to unitholders, debt amortization and recurring capital expenditures. During the remainder of 2010 and 2011, $184,000,000 and $2,087,000,000 of our outstanding debt matures, respectively. We may refinance such debt or choose to repay all or a portion, using existing cash balances or our revolving credit facilities. Capital requirements for development expenditures and acquisitions (excluding Fund acquisitions as described below), may require funding from borrowings and/or equity offerings. We may from time to time purchase or retire outstanding debt securities. Such purchases, if any, will depend on prevailing market conditions, liquidity requirements and other factors. The amo unts involved in connection with these transactions could be material to our consolidated financial statements.
In the fourth quarter of 2009 and the first quarter of 2010, we notified the master servicers of three non-recourse loans secured by properties in San Francisco, California, High Point, North Carolina, and Springfield, Virginia that the cash flows generated from these properties were insufficient to fund debt service payments and that we were not prepared to fund any cash shortfalls. Accordingly, we requested that each of these loans be placed with their respective special servicers. We have ceased making debt service payments on these loans and are in default. These defaults have not had, nor are expected to have, any material impact on our current or future business operations, our ability to raise capital or our credit ratings. On October 14, 2010, the special servicer of the loan secured by our San Francisco property foreclosed o n the property. As a result, in the fourth quarter, we will remove this property and related debt from our consolidated balance sheet, which will not have a material impact on our consolidated statement of income. In October 2010, the special servicer of the loan secured by our property in High Point, North Carolina filed a motion to place the property in receivership. We continue to negotiate with the special servicer of the loan secured by our property in Springfield, Virginia. There can be no assurance as to the timing and ultimate resolution of these matters. In the three and nine months ended September 30, 2010, we have accrued $5,887,000 and $12,445,000, respectively, of default interest on these loans.
We have raised, and may continue to raise, capital for future real estate acquisitions through our Real Estate Fund. On July 6, 2010, we completed the first closing of the Fund with aggregate equity commitments of $550,000,000, of which we committed $200,000,000. We expect to raise an additional $450,000,000 bringing total commitments to $1 billion. We are the general partner and investment manager of the Fund and it is our exclusive investment vehicle for all investments that fit within the Fund’s investment parameters during its three-year investment period.
Cash Flows for the Nine Months Ended September 30, 2010
Cash flows provided by operating activities of $594,721,000 was comprised of (i) net income of $425,887,000, (ii) $213,747,000 of non-cash adjustments, including depreciation and amortization expense, the effect of straight-lining of rental income, equity in net income of partially owned entities, (iii) distributions of income from partially owned entities of $36,829,000, partially offset by (iv) the net change in operating assets and liabilities of $81,742,000, of which $62,500,000 relates to Real Estate Fund investments.
Net cash provided by investing activities of $51,097,000 was comprised of (i) proceeds from sales of marketable securities of $126,015,000, (ii) restricted cash of $125,204,000, (iii) proceeds received from repayment of mezzanine loans receivable of $109,594,000, (iv) proceeds from the sale of real estate and related investments of $48,998,000, (v) distributions of capital from partially owned entities of $45,613,000, (vi) proceeds from maturing short-term investments of $40,000,000, partially offset by (vii) investments in partially owned entities of $159,053,000, (viii) additions to real estate of $98,789,000, (ix) development and redevelopment expenditures of $86,871,000, (x) investments in mezzanine loans receivable and other of $75,697,000, (xi) purchases of marketable equity securities of $13,917,000 and (xii) deposits in connection with real estate a cquisitions of $10,000,000.
Net cash used in financing activities of $335,043,000 was comprised of (i) repayments of borrowings, including the purchase of our senior unsecured notes, of $1,462,652,000, (ii) distributions to Vornado of $354,937,000, (iii) redemption of partnership units of $48,600,000, (iv) distributions to preferred unitholders of $42,100,000, (v) distributions to redeemable security holders of $41,055,000, (vi) debt issuance costs of $14,942,000, and (vii) repurchase of Class A units related to stock compensation arrangements and related tax withholdings of $13,467,000, partially offset by (viii) proceeds from borrowings of $1,603,359,000, and (ix) contributions from noncontrolling interests of $39,351,000.