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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2013
Subsequent Events
Subsequent Events	19. Subsequent Events In July 2013, we sold and settled approximately 165,718 shares of our common stock through our ATM Program for aggregate gross proceeds of $15.2 million ($14.9 million of net proceeds after related expenses). As of the date of this filing, we still had approximately $21.5 million available for issuance under the ATM Program.