Changes In Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2012

Changes In Stockholders' Equity [Abstract]

Schedule Of Changes In Common Stock, Additional Paid-In Capital And Accumulated Other Comprehensive Income/(Loss) Accounts

									Accumulated
						Additional			Other
	Common Stock					Paid-In			Comprehensive
	Shares			Amount		Capital			Income
Balance, December 31, 2011		39,678		$	397	$	389,166		$	13
Unrealized income on available for sale securities, net of tax		-			-		-			35
Exercise of stock options		149			1		3,643			-
Net excess tax benefit from share-based compensation		-			-		2,759			-
Issuance of common stock under the Employee Stock     Purchase Program		-			-		76			-
Forfeitures of restricted stock		(5	)		-		-			-
Issuances of restricted stock		98			1		(1	)		-
Compensatory arrangements (a)		-			-		2,442			-
Balance, March 31, 2012		39,920		$	399	$	398,085		$	48

(a)    Share-based compensation expense includes equity-settled awards only.