EARNINGS PER SHARE (NVE) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,475		$ 12,173
Denominator
Weighted Average Shares of Common Stock Outstanding - basic	235,193,702		235,999,750
Per Share Amounts
Net income per share - basic	$ 0.09		$ 0.05
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 21,475		$ 12,173
Denominator
Weighted Average Number of Shares Outstanding, Basic	235,193,702		235,999,750
Stock options (in shares)	18,767		35,283
Non-Employee Director stock plan (in shares)	179,971		153,686
Employee stock purchase plan (in shares)	10,539		10,888
Restricted Shares (in shares)	579,000		497,750
Performance Shares (in shares)	1,023,909		829,506
Weighted Average Number of Shares Outstanding, Diluted	237,005,888	[1]	237,526,863	[1]
Per Share Amounts
Net income per share - diluted	$ 0.09		$ 0.05
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount			333,140

[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 prior period. If the conditions for conversion were met under this plan, 0 and 333,140 shares would be included for the three months ended March 31, 2013 and 2012, respectively.