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Summary of Significant Accounting Policies (Tables) | 6 Months Ended
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Jun. 30, 2023
Accounting Policies [Abstract] |
Schedule of Calculation of Basic and Diluted Earnings Per Share | The calculations of basic and diluted earnings per share for the three and six months ended June 30, 2023 and 2022 are:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2023 |  | 2022 |  | 2023 |  | 2022
Net income | $ | 118,851 |  |  | $ | 111,276 |  |  | $ | 225,866 |  |  | $ | 301,584 |
Shares used to compute basic earnings per common share | 132,854,000 |  |  | 136,435,000 |  |  | 133,437,000 |  |  | 137,185,000 |
Dilutive effect of stock options | 1,082,000 |  |  | 1,382,000 |  |  | 1,186,000 |  |  | 1,579,000 |
Shares used to compute diluted earnings per common share | 133,936,000 |  |  | 137,817,000 |  |  | 134,623,000 |  |  | 138,764,000 |
Basic earnings per common share | $ | 0.89 |  |  | $ | 0.82 |  |  | $ | 1.69 |  |  | $ | 2.20 |
Diluted earnings per common share | $ | 0.89 |  |  | $ | 0.81 |  |  | $ | 1.68 |  |  | $ | 2.17 |
Schedule of Adjustments To Reconcile Net Income To Net Cash Provided By Operating Activities | The following table provides the details of the adjustments to reconcile net income to net cash provided by operating activities for the six months ended June 30:
| 2023 |  | 2022
Net income | $ | 225,866 |  |  | $ | 301,584 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Depreciation | 17,312 |  |  | 16,384 |
Amortization | 19,054 |  |  | 33,395 |
Equity in earnings of unconsolidated affiliate | (61,590) |  |  | (62,272) |
Distributions received from unconsolidated affiliate | 61,452 |  |  | 69,824 |
Stock-based compensation | 15,479 |  |  | 20,573 |
Provision for losses on receivables | 35 |  |  | 350 |
Deferred income tax expense | (12,600) |  |  | (23,506) |
Net (gain) loss from investments | (1,259) |  |  | 3,109 |
Change in other long-term liabilities | 1,946 |  |  | 1,998 |
Change in other assets | (71) |  |  | (3,111) |
Contract costs capitalized, net of amortization | (633) |  |  | 883 |
Other | 2,443 |  |  | (1,521) |
Change in current assets and liabilities |  |  |
(Increase) decrease in |  |  |
Receivables from investment products | 5,710 |  |  | 4,125 |
Receivables | (64,551) |  |  | (25,523) |
Other current assets | (6,907) |  |  | (7,014) |
Advances due from unconsolidated affiliate | 50,493 |  |  | 53,500 |
(Decrease) increase in |  |  |
Accounts payable | (6,063) |  |  | (7) |
Accrued liabilities | (63,682) |  |  | (55,734) |
Deferred revenue | 20 |  |  | 3,578 |
Total adjustments | (43,412) |  |  | 29,031 |
Net cash provided by operating activities | $ | 182,454 |  |  | $ | 330,615 |

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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://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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