Stock Incentive Plan (Tables)

12 Months Ended

Dec. 31, 2016

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

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes RSU information for the three years ended December 31, 2016:

	2016		2015		2014
RSUs granted and unvested at beginning of period:	4,158,325		5,330,445		4,491,520
Granted	1,000,559		997,522		1,154,950
Vested	(77,250	)	(1,938,000	)	(81,500	)
Canceled	(219,536	)	(231,642	)	(234,525	)
RSUs granted and unvested at end of period:	4,862,098		4,158,325		5,330,445

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, 2016:

(In thousands)	2016			2015			2014
Unearned compensation at beginning of year	$	103,538		$	88,015		$	73,205
RSUs granted, net of cancellations	52,697			50,442			51,575
RSUs expensed	(35,585		)	(30,691		)	(27,966		)
RSUs forfeitures	(4,685		)	(4,228		)	(8,799		)
Unearned compensation at end of year	$	115,965		$	103,538		$	88,015