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EQUITY (Tables)
 6 Months Ended
Jun. 30, 2014
Stockholders' Equity Note [Abstract]  
Schedule of changes in equity
Changes in equity for the six months ended June 30, 2014 are as follows:
 
Shareholders’
Equity
 
Non-controlling
Interests
 
Total Equity
Balance, December 31, 2013
$
1,526,602

 
$
4,086

 
$
1,530,688

Comprehensive income:
 

 
 

 
 

Net income (loss)
133,785

 
(72
)
 
133,713

Other comprehensive income
3,550

 
705

 
4,255

Total comprehensive income
137,335

 
633

 
137,968

 
 
 
 
 
 
Cash dividends declared - $0.46 per share
(36,779
)
 
—

 
(36,779
)
Issuance of shares under benefit plans
11,195

 
—

 
11,195

Purchase of shares for treasury
(119,333
)
 
—

 
(119,333
)
Transactions with non-controlling interests
(1,484
)
 
(782
)
 
(2,266
)
Balance, June 30, 2014
$
1,517,536

 
$
3,937

 
$
1,521,473

Changes in equity for the six months ended June 30, 2013 are as follows:
 
Shareholders’
Equity
 
Non-controlling
Interests
 
Total Equity
Balance, December 31, 2012
$
1,342,373

 
$
15,948

 
$
1,358,321

Comprehensive income (loss):
 

 
 

 
 

Net income (loss)
139,412

 
(42
)
 
139,370

Other comprehensive loss
(24,387
)
 
(49
)
 
(24,436
)
Total comprehensive income (loss)
115,025

 
(91
)
 
114,934

 
 
 
 
 
 
Cash dividends declared - $0.40 per share
(33,030
)
 
—

 
(33,030
)
Issuance of shares under benefit plans
23,907

 
—

 
23,907

Purchase of shares for treasury
(69,677
)
 
—

 
(69,677
)
Balance, June 30, 2013
$
1,378,598

 
$
15,857

 
$
1,394,455