Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details Narrative)

v3.7.0.1
STOCKHOLDERS' EQUITY (Details Narrative) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Cash dividend paid $ 25,058 $ 21,855  
Cash dividend per share (in dollars per share) $ .115 $ .10  
Number of shares repurchased (in shares)   54,000  
Par value of common stock (in dollars per share) $ 1   $ 1
Weighted average stock price of shares repurchased (in dollars per share)   $ 24.77  
Repurchase of common stock from employees $ 7,500 $ 7,400  
Common stock reserved for issuance upon exercise of stock options (in shares) 4,300    
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Tax benefits from share-based payments $ 3,000 $ 3,700
Unrecognized compensation cost $ 41,600   $ 29,900
Unrecognized compensation cost, period for recognition 4 years 1 month 6 days   3 years 9 months 18 days