Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity At-the-Market Offering (Details)

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Stockholders' Equity At-the-Market Offering (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
Sep. 30, 2013
Class of Stock [Line Items]  
At-the-Market Offering, Number of Shares Authorized to be Sold 20,000,000
Stock Issued And Outstanding, Shares, At-the-Market Offering 7,585,869
Stock Issued and Outstanding, Value, At-the-Market Offering $ 77,603