Net Income per Share (Net Income Per Basic and Diluted Share) (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Denominator
Total weighted-average shares used to compute net income per basic share (in Shares)	122,896	128,799
Diluted (in Shares)	122,896	128,799
Income (Loss) from Continuing Operations, Per Basic Share	$ (0.26)	$ (0.07)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Basic Share	0.00	0.12
Basic (in Dollars per Share)	(0.26)	0.05
Income (Loss) from Continuing Operations, Per Diluted Share	(0.26)	(0.07)
Discontinued Operation, Income (Loss) from Discontinued Operation, Net of Tax, Per Diluted Share	0.00	0.12
Net income per diluted share (in Dollars per Share)	$ (0.26)	$ 0.05
Debt Instrument [Line Items]
Income (Loss) from Continuing Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest	$ (31,767)	$ (8,452)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	(244)	15,069
Net Income (Loss) Attributable to Parent	$ (31,723)	$ 6,680