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Financial Instruments	3 Months Ended
	Mar. 31, 2012
Financial Instruments [Abstract]
Financial Instruments	7. FINANCIAL INSTRUMENTS The Company considers the recorded value of its financial assets and liabilities, consisting primarily of cash and cash equivalents, restricted cash, accounts receivable, accounts payable, accrued expenses and other current liabilities to approximate the fair value of the respective assets and liabilities at March 31, 2012 and December 31, 2011. At March 31, 2012, the fair value of the Company's 6.00% convertible notes due 2012 was estimated at $134.6 million based on quoted market prices and is a Level 1 fair value measurement.

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- Definition

The entire disclosure for financial instruments. This disclosure includes, but is not limited to, fair value measurements of short and long term marketable securities, international currencies forward contracts, and auction rate securities. Financial instruments may include hedging and non-hedging currency exchange instruments, derivatives, securitizations and securities available for sale at fair value. Also included are investment results, realized and unrealized gains and losses as well as impairments and risk management disclosures.

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