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Subsequent Events	6 Months Ended
	Jun. 30, 2011
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	18. SUBSEQUENT EVENTS On July 11, 2011, the Company used available corporate funds and a draw on its Credit Facility to prepay its One Logan Square mortgage debt amounting to $60.0 million without penalty. The Company will also write off $0.8 million of deferred financing costs in the next quarter as a result of this prepayment. The Company has evaluated subsequent events through the date the financial statements were issued.

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- Definition

Subsequent Events.

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- Definition

Describes disclosed significant events or transactions that occurred after the balance sheet date, but before the issuance of the financial statements. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 11

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