CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 22,583	$ 6,138
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	48,634	47,991
Amortization of above/below market leases	(672)	(1,241)
Amortization of deferred financing costs	1,293	1,307
Amortization of share-based compensation	5,337	4,083
Bad debt expense	241	276
Changes in operating assets and liabilities:
Accounts receivable	(1,435)	(3,559)
Deferred rent receivable	(1,660)	(3,262)
Deferred leasing costs	(5,373)	(2,936)
Other assets	(2,713)	1,000
Accounts payable and accrued expenses	3,361	1,206
Prepaid rent and other liabilities	380	(3,883)
Deferred rent payable	5,250	663
Net cash provided by operating activities	75,226	47,783
CASH FLOWS FROM INVESTING ACTIVITIES
Tenant improvements	(5,214)	(5,266)
Real estate improvements	(117,964)	(50,276)
Acquisition of NY2	(21,889)
Acquisition of Comfluent, net of cash received		(2,581)
Changes in reserves for capital improvements		8,690
Net cash used in investing activities	(145,067)	(49,433)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from exercise of stock options	630	874
Offering costs	(27)
Proceeds from revolving credit facility	108,000	57,750
Principal payments on mortgage loans	(1,125)	(25,233)
Payments of loan fees and costs	(2,621)	(119)
Dividends and distributions paid on common stock and OP units	(37,508)	(24,829)
Dividends paid on preferred stock	(4,936)
Net cash provided by financing activities	62,413	8,443
Net change in cash and cash equivalents	(7,428)	6,793
Cash and cash equivalents, beginning of period	8,130	6,628
Cash and cash equivalents, end of period	702	13,421
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	3,205	4,092
NON-CASH INVESTING AND FINANCING ACTIVITY
Construction costs payable capitalized to real estate	32,291	11,891
Accrual of dividends and distributions	$ 15,051	$ 8,640

The cash outflow associated with the acquisition of Land and Building associated with the property named NY2.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash outflow for the allowance granted to lessee and/or direct costs incurred by lessor used to prepare the leased premises for tenant's occupancy.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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