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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Calculation of Basic and Diluted Earnings per Share | The following table sets forth the calculation of basic and diluted earnings (loss) per share.
|  |  | Year Ended December 31,
(in thousands, except per share data) |  | 2019 |  |  | 2018 |  |  | 2017
Net income (loss) | $ | 23,425 |  | $ | 22,817 |  | $ | (31,901)
Denominator for basic earnings per share – weighted-average number of |  |  |  |  |  |  |  |
| common shares outstanding during the period |  | 38,338 |  |  | 46,332 |  |  | 49,680
Incremental common shares attributable to exercise of dilutive options |  | 90 |  |  | 104 |  |  | —
Incremental common shares attributable to outstanding |  |  |  |  |  |  |  |
| restricted stock units |  | 335 |  |  | 219 |  |  | —
Denominator for diluted earnings per share |  | 38,763 |  |  | 46,655 |  |  | 49,680
Basic earnings (loss) per share |  | $ 0.61 |  |  | $ 0.49 |  |  | $ (0.64)
Diluted earnings (loss) per share |  | $ 0.60 |  |  | $ 0.49 |  |  | $ (0.64)
Schedule Of Unrecognized Compensation Cost And Remaining Weighted-Average Amortization Stock-Based Awards | As of December 31, 2019, the unrecognized compensation cost and remaining weighted-average amortization period related to stock-based awards were as follows:
|  |  |  |  | Performance-
|  |  |  |  | based
|  |  | Restricted |  | Restricted
|  |  | Stock |  | Stock
(in thousands) |  | Units |  | Units(1)
| Unrecognized compensation cost |  | $ 17,621 |  | $ 2,834
| Remaining weighted-average amortization period |  | 2.5 years |  | 1 years
(1) Based on the probable achievement of the performance goals identified in each award.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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