EARNINGS PER SHARE (NVE) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 63,233		$ 69,439		$ 84,708		$ 81,612
Denominator
Weighted Average Shares of Common Stock Outstanding - basic	235,489,559		235,999,750		235,342,448		235,999,750
Per Share Amounts
Net income per share - basic	$ 0.27		$ 0.29		$ 0.36		$ 0.35
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 63,233		$ 69,439		$ 84,708		$ 81,612
Denominator
Weighted Average Number of Shares Outstanding, Basic	235,489,559		235,999,750		235,342,448		235,999,750
Stock options (in shares)	58,916		38,237		38,842		36,760
Non-Employee Director stock plan (in shares)	185,335		160,257		182,653		156,972
Employee stock purchase plan (in shares)	2,719		2,725		6,672		6,807
Restricted Shares (in shares)	472,000		518,750		525,500		508,250
Performance Shares (in shares)	1,192,871		1,183,557		1,108,390		1,006,531
Weighted Average Number of Shares Outstanding, Diluted	237,401,400	[1]	237,903,276	[1]	237,204,505	[1]	237,715,070	[1]
Per Share Amounts
Net income per share - diluted	$ 0.27		$ 0.29		$ 0.36		$ 0.34

[1] The denominator does not include stock equivalents for options issued under the non-qualified stock option plan due to conversion prices being higher than market prices for the periods ending June 30, 2012. If the conditions for conversion were met under this plan, 327,503 and 330,322 shares, would be included for the three and six months ended June 30, 2012, respectively.