Earnings (Loss) Per Share (Details) - $ / shares	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average number of common shares outstanding, basic (in shares)	53,808,000	53,683,000
Weighted average number of common shares outstanding, diluted (in shares)	53,885,000	53,808,000
Effect of dilutive shares on earnings per share (in usd per share)	$ 0	$ 0
Antidilutive shares excluded from computation of earnings per share (in shares)		0
Restricted Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive securities (in shares)	74,000	82,000
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive securities (in shares)	3,000	29,000
Purchase Match Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive securities (in shares)	0	14,000

The amount of net income (loss) derived from continuing operations during the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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+ Details