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Subsequent Events	6 Months Ended
	Jun. 30, 2012
Subsequent Event [Abstract]
Subsequent Event	17. Subsequent Event On July 24, 2012, we entered into Amendment No. 2 to the Shelf Agreement as further discussed in Note 7.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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