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SHAREHOLDERS' EQUITY
 3 Months Ended
Mar. 31, 2017
Stockholders' Equity Note [Abstract]  
SHAREHOLDERS’ EQUITY
SHAREHOLDERS’ EQUITY

We make repurchases of our common stock mainly through the use of open market purchases and, at times, through accelerated share repurchase programs. As of March 31, 2017, we were authorized to repurchase up to $299.7 million of our common stock. During the three months ended March 31, 2016, through open market repurchase plans, we repurchased and retired 48,816 shares of our common stock at a cost of $2.9 million, or an average cost of $59.37 per share, including commissions.