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Share-Based Compensation And Stock Repurchase Plans (Schedule Of Restricted Stock Units Issued And Vested) (Details) - USD ($) $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Dec. 16, 2020 | Mar. 10, 2020 | Apr. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Value of options, Unvested |  |  |  |  | $ 13,969
Restricted Stock Units (RSUs) [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted | 114,803 | 287,163 | 262,830 | 1,561,690 |
Number of options, Vesting |  |  |  | 614,081 |
Number of options, Forfeited |  |  |  | 12,285 |
Number of options, Unvested |  |  |  | 935,324 |
Value of options, Granted |  |  |  | $ 10,930,716 |
Value of options, Vesting |  |  |  | 5,955,243 |
Value of options, Forfeited |  |  |  | 144,343 |
Value of options, Unvested |  |  |  | $ 4,831,129 |
Restricted Stock Units (RSUs) [Member] | Award Date 1 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 68,153 |
Number of options, Vesting |  |  |  | 67,372 |
Number of options, Forfeited |  |  |  | 781 |
Value of options, Granted |  |  |  | $ 815,160 |
Value of options, Vesting |  |  |  | 805,759 |
Value of options, Forfeited |  |  |  | $ 9,400 |
Restricted Stock Units (RSUs) [Member] | Award Date 2 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 70,538 |
Number of options, Vesting |  |  |  | 70,006 |
Number of options, Forfeited |  |  |  | 532 |
Value of options, Granted |  |  |  | $ 1,124,348 |
Value of options, Vesting |  |  |  | 1,115,852 |
Value of options, Forfeited |  |  |  | $ 8,496 |
Restricted Stock Units (RSUs) [Member] | Award Date 3 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 97,600 |
Number of options, Vesting |  |  |  | 94,426 |
Number of options, Forfeited |  |  |  | 3,174 |
Value of options, Granted |  |  |  | $ 1,581,512 |
Value of options, Vesting |  |  |  | 1,529,648 |
Value of options, Forfeited |  |  |  | $ 51,864 |
Restricted Stock Units (RSUs) [Member] | Award Date 4 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 59,258 |
Number of options, Vesting |  |  |  | 45,008 |
Number of options, Forfeited |  |  |  | 3,104 |
Number of options, Unvested |  |  |  | 11,146 |
Value of options, Granted |  |  |  | $ 944,070 |
Value of options, Vesting |  |  |  | 714,328 |
Value of options, Forfeited |  |  |  | 50,005 |
Value of options, Unvested |  |  |  | $ 179,737 |
Restricted Stock Units (RSUs) [Member] | Award Date 5 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 401,966 |
Number of options, Vesting |  |  |  | 210,455 |
Number of options, Forfeited |  |  |  | 1,994 |
Number of options, Unvested |  |  |  | 189,517 |
Value of options, Granted |  |  |  | $ 2,281,899 |
Value of options, Vesting |  |  |  | 1,112,767 |
Value of options, Forfeited |  |  |  | 10,235 |
Value of options, Unvested |  |  |  | $ 1,158,896 |
Restricted Stock Units (RSUs) [Member] | Award Date 6 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 361,593 |
Number of options, Vesting |  |  |  | 126,814 |
Number of options, Forfeited |  |  |  | 1,497 |
Number of options, Unvested |  |  |  | 233,282 |
Value of options, Granted |  |  |  | $ 2,185,222 |
Value of options, Vesting |  |  |  | 676,889 |
Value of options, Forfeited |  |  |  | 9,326 |
Value of options, Unvested |  |  |  | $ 1,499,007 |
Restricted Stock Units (RSUs) [Member] | Award Date 7 [Member] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of options, Granted |  |  |  | 502,582 |
Number of options, Forfeited |  |  |  | 1,203 |
Number of options, Unvested |  |  |  | 501,379 |
Value of options, Granted |  |  |  | $ 1,998,505 |
Value of options, Forfeited |  |  |  | 5,017 |
Value of options, Unvested |  |  |  | $ 1,993,489 |

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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