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Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Numerator:
Net income (loss)	$ 11,166	$ (9,140)	$ 8,553	$ (15,679)
Denominator:
Weighted-average common shares outstanding, basic (in shares)	112,144	113,572	112,177	113,240
Effect of potential dilutive common shares	2,787	0	3,181	0
Weighted-average common shares outstanding, diluted (in shares)	114,931	113,572	115,358	113,240
Earnings per share, basic	$ 0.10	$ (0.08)	$ 0.08	$ (0.14)
Earnings per share, diluted	$ 0.10	$ (0.08)	$ 0.07	$ (0.14)

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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