Subsequent Events	6 Months Ended
Jun. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events: On July 14, 2012, we entered into an Agreement and Plan of Merger (the “Agreement”) with Sky Growth Holdings Corporation, a Delaware corporation (“Parent”), and Sky Growth Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”). The Agreement provides for the merger of Merger Sub with and into the Company, with the Company surviving the Merger as a wholly-owned subsidiary of Parent (the “Merger”). Parent and Merger Sub are beneficially owned by affiliates of TPG Capital, L.P. and were formed solely for the purposes of executing the Agreement and facilitating the Merger. The Agreement provides for a purchase price of approximately $1.9 billion for our fully diluted equity. We expect this transaction to close, subject to customary conditions, before the end of 2012. Some of the customary conditions to closing include obtaining the approval of the holders of a majority of the outstanding shares of our common stock and the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976. Under the Agreement, we may solicit superior proposals from third parties through August 24, 2012. Parent has certain termination rights that could require us to pay Parent a termination fee of $24 million or $48 million, based on the circumstances of the termination, plus in each case up to $7 million in Parent's expenses. We also have certain termination rights in certain circumstances. On July 14, 2012, in conjunction with our execution of the Agreement, we modified our Rights Agreement dated as of October 27, 2004, with American Stock Transfer & Trust Company (the “Rights Agreement”), to render the Rights Agreement inapplicable to the Agreement and the Merger and to cause the Rights Agreement to terminate immediately prior to the effective time of the Merger. For more information about the Merger, the Agreement and our modification of the Rights Agreement, please see our Current Report on Form 8-K, filed July 16, 2012 and our Preliminary Proxy Statement on Schedule 14A, expected to be filed on or about August 2, 2012.

Subsequent Events:

On July 14, 2012, we entered into an Agreement and Plan of Merger (the “Agreement”) with Sky Growth Holdings Corporation, a Delaware corporation (“Parent”), and Sky Growth Acquisition Corporation, a Delaware corporation and a wholly owned subsidiary of Parent (“Merger Sub”). The Agreement provides for the merger of Merger Sub with and into the Company, with the Company surviving the Merger as a wholly-owned subsidiary of Parent (the “Merger”).

Parent and Merger Sub are beneficially owned by affiliates of TPG Capital, L.P. and were formed solely for the purposes of executing the Agreement and facilitating the Merger. The Agreement provides for a purchase price of approximately $1.9 billion for our fully diluted equity. We expect this transaction to close, subject to customary conditions, before the end of 2012. Some of the customary conditions to closing include obtaining the approval of the holders of a majority of the outstanding shares of our common stock and the expiration or early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976.

Under the Agreement, we may solicit superior proposals from third parties through August 24, 2012. Parent has certain termination rights that could require us to pay Parent a termination fee of $24 million or $48 million, based on the circumstances of the termination, plus in each case up to $7 million in Parent's expenses. We also have certain termination rights in certain circumstances.

On July 14, 2012, in conjunction with our execution of the Agreement, we modified our Rights Agreement dated as of October 27, 2004, with American Stock Transfer & Trust Company (the “Rights Agreement”), to render the Rights Agreement inapplicable to the Agreement and the Merger and to cause the Rights Agreement to terminate immediately prior to the effective time of the Merger.

For more information about the Merger, the Agreement and our modification of the Rights Agreement, please see our Current Report on Form 8-K, filed July 16, 2012 and our Preliminary Proxy Statement on Schedule 14A, expected to be filed on or about August 2, 2012.