Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of nonvested Common Share and nonvested Common Share unit activity

The following table summarizes nonvested common share, nonvested common share unit and DEU activity for the three months ended March 31, 2021:

	Time and Performance- Based Share Awards			Time-Based Share Awards			Share Units			DEUs
(Shares in thousands)	Number of Shares	Weighted Average Grant Date Fair Value		Number of Shares	Weighted Average Grant Date Fair Value		Number of Share Units	Weighted Average Grant Date Fair Value		Dividend Equivalent Units	Weighted Average Grant Date Fair Value
Outstanding at beginning of year	363	$	47.09	153	$	46.34	492	$	46.59	21	$	37.66
Granted	281	15.64		93	43.67		87	43.65		4	43.50
Vested	(113)	45.02		(77)	45.36		(164)	48.01		(8)	38.14
Forfeited	—	N/A		—	N/A		(6)	50.43		—	36.11
Outstanding at March 31, 2021	531	$	30.89	169	$	45.31	409	$	45.34	17	$	38.85

Schedule of portion of nonvested Common Shares earned based upon achievement of compounded annual book value per share growth

The portion of these nonvested performance-based share awards that will be earned is as follows:

		Relative Total Shareholder Return vs. S&P 1500 Financial Services Index
		≤25th percentile		50th percentile "Target"		≥75th percentile
Three-Year Book Value Per Share CAGR	14% "Target"	100	%	150	%	200	%
	12%	75	%	125	%	175	%
	10%	50	%	100	%	150	%
	8%	25	%	75	%	125	%
	6%	0	%	50	%	100	%

Schedule of compensation expense, net of forfeitures, and related tax effects recognized in connection with nonvested shares

Compensation expense, net of forfeitures, and related tax effects recognized in connection with nonvested shares was as follows:

	Three Months Ended March 31,
(In thousands)	2021		2020
Compensation expense	$	5,179	$	4,780
Income tax benefit	986		918