SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2012

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Reconciliation of number of shares used in the calculation of basic and diluted earnings (loss) per common share

	December 31,
	2012		2011		2010
	(in thousands)
Weighted-average shares of common stock outstanding—basic		46,635		46,250		45,600
Potentially dilutive shares resulting from stock plans		424		586		371
Weighted-average common shares—diluted		47,059		46,836		45,971
Antidilutive equity awards not included in weighted average common shares-diluted		596		164		1,701