Quarterly report pursuant to Section 13 or 15(d)

CONSOLIDATED STATEMENTS OF EQUITY

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CONSOLIDATED STATEMENTS OF EQUITY - USD ($)
$ in Thousands
Common Stock
Treasury Stock at Cost
Additional Paid-in Capital
Retained Earnings
Total
Balance at Dec. 31, 2015 $ 377   $ 838,976 $ 76,376 $ 915,729
Increase (Decrease) in Stockholders' Equity          
Net income       26,731 26,731
Share-based compensation     3,705   3,705
Issuance of restricted share awards under long-term equity incentive plan 8   (8)    
Repurchase of shares of common stock pursuant to Share Repurchase Program   $ (4,962)     (4,962)
Shares of common stock withheld to satisfy statutory withholding requirements     (1,285)   (1,285)
Balance at Jun. 30, 2016 385 (4,962) 841,388 103,107 939,918
Balance at Dec. 31, 2016 385 (22,296) 845,476 148,982 972,547
Increase (Decrease) in Stockholders' Equity          
Net income       21,749 21,749
Share-based compensation     5,101   5,101
Issuance of restricted share awards under long-term equity incentive plan 1   (1)    
Repurchase of shares of common stock pursuant to Share Repurchase Program   (39,286)     (39,286)
Shares of common stock withheld to satisfy statutory withholding requirements     (2,147)   (2,147)
Balance at Jun. 30, 2017 $ 386 $ (61,582) $ 848,429 $ 170,731 $ 957,964