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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule Of Allowance For Doubtful Accounts | The following table summarizes the activity in the Company’s allowance for doubtful accounts during 2020, 2019 and 2018:
|  | Balance at |  |  |  |  |  |  |  |  |  |  | Balance at |
|  | Beginning |  |  | Charges to |  |  |  |  |  |  | End of |
(in thousands) |  | of Period |  |  | Operations |  |  | Deductions |  |  | Period |
Year ended December 31, 2020: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts(1) |  | $ | 10,085 |  |  |  | 2,160 |  |  |  | (10,874 | ) |  | $ | 1,371 |
Year ended December 31, 2019: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts(1) |  | $ | 1,733 |  |  |  | 10,323 |  |  |  | (1,971 | ) |  | $ | 10,085 |
Year ended December 31, 2018: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts(1) |  | $ | 105 |  |  |  | 1,718 |  |  |  | (90 | ) |  | $ | 1,733 |
(1) | Deductions in the allowance for doubtful accounts represent write-offs, net of recoveries, of amounts determined to be uncollectible.
Calculation of Basic and Diluted Earnings per Share | The following table sets forth the calculation of basic and diluted earnings per share.
|  | Year Ended December 31, |
(in thousands, except per share data) |  | 2020 |  |  | 2019 |  |  | 2018 |
Net income |  | $ | 14,055 |  |  | $ | 23,425 |  |  | $ | 22,817 |
Denominator for basic earnings per share – weighted-average number of common shares outstanding during the period |  |  | 36,524 |  |  |  | 38,338 |  |  |  | 46,332 |
Incremental common shares attributable to exercise of dilutive options |  |  | 36 |  |  |  | 90 |  |  |  | 104 |
Incremental common shares attributable to outstanding restricted stock units |  |  | 257 |  |  |  | 335 |  |  |  | 219 |
Denominator for diluted earnings per share |  |  | 36,817 |  |  |  | 38,763 |  |  |  | 46,655 |
Basic earnings per share |  | $ | 0.38 |  |  | $ | 0.61 |  |  | $ | 0.49 |
Diluted earnings per share |  | $ | 0.38 |  |  | $ | 0.60 |  |  | $ | 0.49 |
Schedule Of Unrecognized Compensation Cost And Remaining Weighted-Average Amortization Stock-Based Awards | As of December 31, 2020, the unrecognized compensation cost and remaining weighted-average amortization period related to stock-based awards were as follows:
(in thousands) |  | Restricted Stock Units |  |  | Performance- based Restricted Stock Units (1) |
Unrecognized compensation cost |  | $ | 19,616 |  |  | $ | 3,335 |
Remaining weighted-average amortization period |  | 2.5 years |  |  | 2.2 years |
(1) | Based on the probable achievement of the performance goals identified in each award.

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