Earnings per Share (EPS) (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Income (loss) from continuing operations		$ 4,336	$ 20,876	$ 25,157	$ (6,779)
Loss from discontinued operations, net of tax		0	(1,020)	0	(4,906)
Net income (loss)		$ 4,336	$ 19,856	$ 25,157	$ (11,685)
Denominator:
Weighted-average shares used in basic EPS (in shares)		173,490,000	173,970,000	173,859,000	173,367,000
Dilutive effect of common stock equivalents (in shares)		3,479,000	5,009,000	3,814,000	0
Weighted-average shares used in diluted EPS (in shares)		176,969,000	178,979,000	177,673,000	173,367,000
Basic earnings (loss) per share:
Continuing operations (in dollars per share)	[1]	$ 0.02	$ 0.12	$ 0.14	$ (0.04)
Discontinued operations (in dollars per share)	[1]	0	(0.01)	0	(0.03)
Net income (loss) (in dollars per share)	[1]	0.02	0.11	0.14	(0.07)
Diluted earnings (loss) per share:
Continuing operations (in dollars per share)	[1]	0.02	0.12	0.14	(0.04)
Discontinued operations (in dollars per share)	[1]	0	(0.01)	0	(0.03)
Net income (loss) (in dollars per share)	[1]	$ 0.02	$ 0.11	$ 0.14	$ (0.07)
Common stock equivalents excluded from calculation of diluted earnings per share because their impact would be anti-dilutive (in shares)		9,602,000	6,451,000	9,602,000	6,451,000
Dilutive effect of common stock equivalents (in shares)					5,382,000

[1] The sum of the earnings per share amounts may not equal the totals due to rounding.