Note 5 - Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2012

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

						Weighted-Average		Aggregate
				Weighted-Average		Remaining Contractual		Intrinsic
	Shares			Exercise Price		Life (in years)		Value (in thousands)
Balance, December 31, 2011		4,356,985		$	28.86		3.0	$	37
Exercised		(39,784	)		16.28
Forfeited		(249,506	)		22.27
Balance, March 31, 2012		4,067,695		$	29.40		3.0	$	65
Exercisable, March 31, 2012		3,959,668		$	29.57		2.9	$	65

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

	Units
Balance at December 31, 2011		171,410
Granted		1,943
Forfeited		(122	)
Vested		(11,814	)
Balance at March 31, 2012		161,417

	For the three months ended March 31,
(Dollars in thousands)	2012			2011
Short-fall of tax deductions in excess of grant-date fair value	$	(565	)	$	(234	)
Benefit of tax deductions on grant-date fair value		663			306
Total benefit of tax deductions	$	98		$	72