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Basis of Presentation and Summary of Significant Accounting Policies - Earnings (Loss) Per Share (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Summary of computation of basic and diluted net income (loss) per share
Weighted average shares outstanding (shares)	16,529	20,447
Dilutive potential common shares:
Restricted stock (shares)	0	45
Stock options (shares)	0	785
Shares used to compute diluted income per share (shares)	16,529	21,277
Potentially dilutive shares excluded from calculation due to anti-dilutive effect (shares)	10,144	7,015

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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Number of shares of restricted stock determined by relating the portion of time within a reporting period that restricted shares have been outstanding to the total time in that period. Restricted shares are subject to sales, contractual, regulatory or other restrictions that prevent or inhibit the holder from freely disposing of them before the restriction ends.

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