Note 3 - Share-based Compensation

3 Months Ended

Mar. 31, 2013

Disclosure of Compensation Related Costs, Share-based Payments [Text Block]

3.     Share-based Compensation

The following table summarizes the components of our share-based compensation program expense (in thousands):

	Three Months Ended March 31,
		2013		2012
Restricted share units:
Pretax compensation expense	$	7,203	$	6,745
Tax benefit		2,755		2,580
Restricted share unit expense, net of tax	$	4,448	$	4,165
Performance share units:
Pretax compensation expense	$	1,571	$	1,125
Tax benefit		601		430
Performance share unit expense, net of tax	$	970	$	695
Stock options:
Pretax compensation expense	$	363	$	231
Tax benefit		139		88
Stock option expense, net of tax	$	224	$	143

      As of March 31, 2013, we had $39.9 million, $9.4 million and $0.3 million of total unrecognized compensation expense related to restricted share units, performance share units, and stock options, respectively, that is to be recognized over the remaining weighted-average period of approximately 2.6 years for restricted share units, 2.8 years for performance share units, and 1.1 years for stock options.  During the first quarter 2013, we issued 7,492 shares for vested restricted share units and 47,100 shares as a result of stock option exercises.