EARNINGS PER SHARE (NVE) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 12,173		$ 2,330
Denominator
Weighted Average Shares of Common Stock Outstanding - basic	235,999,750		235,526,425
Per Share Amounts
Net income per share - basic	$ 0.05		$ 0.01
Numerator
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 12,173		$ 2,330
Denominator
Weighted Average Number of Shares Outstanding, Basic	235,999,750		235,526,425
Stock options (in shares)	35,283		33,399
Non-Employee Director stock plan (in shares)	153,686		163,902
Employee stock purchase plan (in shares)	10,888		14,345
Restricted Shares (in shares)	497,750		101,240
Performance Shares (in shares)	829,506		945,347
Weighted Average Number of Shares Outstanding, Diluted	237,526,863	[1]	236,784,658	[1]
Per Share Amounts
Net income per share - diluted	$ 0.05		$ 0.01
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	466,183		581,757

[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 all periods. If the conditions for conversion were met under this plan, 466,183 and 581,757 shares would be included for the three months ended March 31, 2012 and 2011, respectively.