Subsequent Event (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010	Aug. 01, 2011 Senior Subordinated Notes [Member] Option of the Holders [Member] Financing [Member]
Subsequent Event [Line Items]
Convertible Subordinated Debt Repurchased	$ 223,604	$ 218,268	$ (184,800)

- Definition

Including the current and noncurrent portions, the carrying value of convertible subordinated debt, as of the balance sheet date, initially scheduled to be repaid after one year or beyond the normal operating cycle if longer. This form of debt can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder, and places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets.

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