Stock Incentive Plan (Tables)

12 Months Ended

Dec. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes RSU information for the three years ended December 31, 2021:

	2021	2020	2019
RSUs granted and unvested at beginning of period:	3,804,336	4,124,260	5,062,661
Granted	848,660	962,453	840,796
Vested	(1,015,973)	(1,111,588)	(1,447,522)
Canceled	(207,344)	(170,789)	(331,675)
RSUs granted and unvested at end of period:	3,429,679	3,804,336	4,124,260

Schedule of Share-based Compensation, Unearned Compensation Related to RSU's

The fair value of RSUs at the date of grant are recorded as unearned compensation, a component of stockholders’ equity, and expensed over the vesting period. Following is a summary of changes in unearned compensation for the three years ended December 31, 2021:

(In thousands)	2021		2020		2019
Unearned compensation at beginning of year	$	132,310	$	128,390	$	129,669
RSUs granted, net of cancellations	56,711		54,270		53,583
RSUs expensed	(46,441)		(47,108)		(47,329)
RSUs forfeitures	(7,045)		(3,242)		(7,533)
Unearned compensation at end of year	$	135,535	$	132,310	$	128,390