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EQUITY AND NONCONTROLLING INTEREST (Tables)
 6 Months Ended
Jun. 30, 2013
Equity [Abstract]  
Schedule of Stockholders Equity
A reconciliation of the total carrying amount of our equity accounts for the six months ended June 30, 2013 is as follows :

 
COMMON STOCKHOLDERS
 
 
 
 
 
Common Stock
 
Additional Paid-in Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Noncontrolling Interest
 
Total
 
Number of Shares
 
Amount at Par
 
 
 
 
 
(in thousands)
BALANCE AT DECEMBER 31, 2012
151,070

 
$
15,108

 
$
925,132

 
$
(6,148
)
 
$
319,736

 
$
33,504

 
$
1,287,332

Foreign currency translation
—

 
—

 
—

 
(4,699
)
 
—

 
(667
)
 
(5,366
)
Common stock purchases
(410
)
 
(42
)
 
(3,092
)
 
—

 

 
—

 
(3,134
)
Share-based compensation
1,783

 
178

 
9,215

 
—

 
—

 
—

 
9,393

Tax benefits from share-based compensation
—

 
—

 
(1,501
)
 
—

 
—

 
—

 
(1,501
)
Acquisition of the 50% noncontrolling interest in Geostream (Note 3)
—

 
—

 
22,432

 
(4,350
)
 
—

 
(31,196
)
 
(13,114
)
Net income (loss)
—

 
—

 
—

 
—

 
(4,402
)
 
444

 
(3,958
)
BALANCE AT JUNE 30, 2013
152,443

 
$
15,244

 
$
952,186

 
$
(15,197
)
 
$
315,334

 
$
2,085

 
$
1,269,652


A reconciliation of the total carrying amount of our equity accounts for the six months ended June 30, 2012 is as follows :
 
COMMON STOCKHOLDERS
 
 
 
 
 
Common Stock
 
Additional Paid-in Capital
 
Accumulated Other Comprehensive Loss
 
Retained Earnings
 
Noncontrolling Interest
 
Total
 
Number of Shares
 
Amount at Par
 
 
 
 
 
(in thousands)
BALANCE AT DECEMBER 31, 2011
150,733

 
$
15,073

 
$
915,400

 
$
(58,231
)
 
$
312,114

 
$
30,275

 
$
1,214,631

Foreign currency translation
—

 
—

 
—

 
(1,393
)
 
—

 
(1,128
)
 
(2,521
)
Common stock purchases
(468
)
 
(47
)
 
(7,370
)
 
—

 
—

 
—

 
(7,417
)
Exercise of stock options and warrants
89

 
9

 
803

 
—

 
—

 
—

 
812

Share-based compensation
855

 
86

 
8,358

 
—

 
—

 
—

 
8,444

Tax benefits from share-based compensation
—

 
—

 
4,047

 
—

 
—

 
—

 
4,047

Shares surrendered
(68
)
 
(7
)
 
(999
)
 
—

 
—

 
—

 
(1,006
)
Net income (loss)
—

 
—

 
—

 
—

 
32,231

 
(410
)
 
31,821

BALANCE AT JUNE 30, 2012
151,141

 
$
15,114

 
$
920,239

 
$
(59,624
)
 
$
344,345

 
$
28,737

 
$
1,248,811