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Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Numerator:
Net Income (Loss)	$ 1,878	$ 9,502
Denominator:
Weighted-average common shares outstanding, Basic (in shares)	109,733	115,336
Effect of potential dilutive common shares	2,519	2,106
Denominator:
Weighted-average common shares outstanding, Diluted (in shares)	112,252	117,442
Earnings Per Share, Basic	$ 0.02	$ 0.08
Earnings Per Share, Diluted	$ 0.02	$ 0.08

X

- Definition

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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