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Stockholder's Equity
 6 Months Ended
Jun. 30, 2014
Stockholder's Equity

14. Stockholder’s Equity

On June 6, 2012, our Board of Directors authorized a two-year stock repurchase program of up to $250.0 million (the “2012 Repurchase Program”). During the year ended December 31, 2013, we repurchased and retired 1,956,900 shares of our common stock for an average price per share of $36.35, at a cost of $71.1 million, of which $4.4 million was accrued and included in the Condensed Consolidated Balance Sheet, and $66.7 million was paid at December 31, 2013. In January 2014, we paid the balance due of $4.4 million on our 2013 share repurchases. No shares were repurchased during the six months ended June 30, 2014. The 2012 Repurchase Program expired on June 5, 2014, with an unused balance of $128.8 million.