Note 3 - Share-based Compensation

6 Months Ended

Jun. 30, 2019

Notes to Financial Statements

Share-based Payment Arrangement [Text Block]

3. Share-based Compensation

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Restricted share units:
Pretax compensation expense	$	10,892	$	9,844	$	20,634	$	18,435
Tax benefit		2,723		2,559		5,158		4,793
Restricted share unit expense, net of tax	$	8,169	$	7,285	$	15,476	$	13,642
Performance share units:
Pretax compensation expense	$	3,840	$	4,121	$	7,670	$	7,566
Tax benefit		960		1,071		1,917		1,967
Performance share unit expense, net of tax	$	2,880	$	3,050	$	5,753	$	5,599

As of June 30, 2019, we had $76.5 million and $19.9 million of total unrecognized compensation expense related to restricted share units and performance share units, respectively, that is to be recognized over the remaining weighted-average period of approximately 3.3 years for restricted share units and 2.2 years for performance share units. During the six months ended June 30, 2019, we issued 170 shares for vested restricted share units and 51,441 shares for vested performance share units. Norestricted share units or performance share units were issued during the second quarter 2019.