DISCONTINUED OPERATIONS (Details) (USD $) In Thousands, unless otherwise specified	0 Months Ended	3 Months Ended		12 Months Ended
	Sep. 02, 2011	Sep. 30, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Aug. 16, 2011
Discontinued operations
Write-off of remaining unamortized deferred financing costs				$ 844	$ 3,586
Operating results
Net earnings (loss) before income tax expense					113,512	(7,581)
Income tax (benefit) expense				(4,228)	75,388	(2,143)
2007 Credit Agreements
Discontinued operations
Repayment of debt	237,732
Write-off of remaining unamortized deferred financing costs	3,586				3,586
QA business
Discontinued operations
Sale price							275,000
Total net cash proceeds	283,376		2,727		286,103
Estimated cash assumed	8,376
Income tax benefit from final taxable gain recorded to discontinued operations		4,228		4,228
Operating results
Net sales					76,667	112,629
Loss from operations before income tax expense					(6,493)	(7,581)
Gain on sale before income tax expense					120,005
Net earnings (loss) before income tax expense					113,512	(7,581)
Income tax (benefit) expense				(4,228)	75,388	(2,143)
Gain recorded in connection with the sale
Proceeds	(283,376)		(2,727)		(286,103)
Less transaction costs					(2,324)
Proceeds, net of expenses					283,779
Book value of assets sold excluding deferred tax liability					163,774
Gain on sale before income tax expense					120,005
Income tax benefit (expense)	(105,934)			4,228	(105,934)
Gain on sale	14,071				14,071
QA business | Income tax benefit to discontinued operations, out of period adjustment
Operating results
Income tax benefit, prior period adjustment		$ 1,629