Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details Narrative)

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STOCKHOLDERS' EQUITY (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Cash dividend paid     $ 34,959 $ 30,612  
Cash dividend per share (in dollars per share) $ 0.08 $ 0.07 $ 0.16 $ 0.14  
Number of shares repurchased (in shares)       289,000  
Par value of common stock (in dollars per share) $ 1   1   $ 1
Weighted average stock price of shares repurchased (in dollars per share)     $ 22.42 $ 19.65  
Repurchase of common stock from employees $ 900 $ 400 $ 7,000 $ 6,100  
Common stock reserved for issuance upon exercise of stock options (in shares) 5,000,000   5,000,000    
Tax benefits from share-based payments $ (600) 1,100 $ 1,700 4,500 $ 4,700
Restricted Stock Units (RSUs) [Member]          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Unrecognized compensation cost   $ 38,000   $ 38,000 $ 29,400
Unrecognized compensation cost, period for recognition     4 years 1 month 6 days   3 years 8 months 12 days