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Capital Structure and Per Share Data - Additional Information (Details) | 12 Months Ended |
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Dec. 31, 2021 USD ($) Vote Class $ / shares shares | Dec. 31, 2020 USD ($) shares
Capital Structure And Per Share Data [Line Items] |  |
Preferred stock shares authorized | 3,000,000 |
Preferred stock, issued | 0 |
Number of classes of common stock | Class | 2 |
Class A convertible preferred stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Preferred stock shares authorized | 300,000 |
Preferred Stock par value (in dollars per share) | $ / shares | $ 0.1 |
Preferred stock shares redeemed | 13,801.5 |
Preferred stock redemption price (in dollars per share) | $ / shares | $ 1,000 |
Series I Preferred Stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Preferred stock authorized (in shares) | 100,000 |
Series II Preferred Stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Preferred stock authorized (in shares) | 100,000 |
Series III Preferred Stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Preferred stock authorized (in shares) | 100,000 |
Class A common stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Common stock, shares authorized | 100,000,000 |
Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |
Common stock, number of votes per share | Vote | 1 |
Number of shares of class A common stock issuable against each share of class B common stock | 1 |
Authorized amount expend on repurchase of shares | $ | $ 250,000,000 | $ 755,000,000
Common stock class A, shares repurchased | 37,808,540 | 35,809,901
Common stock class A, share repurchase price per share (in dollars per share) | $ / shares | $ 20.23 |
Remaining authorized amount | $ | $ 226,200,000 |
Class B common stock |  |
Capital Structure And Per Share Data [Line Items] |  |
Common stock, shares authorized | 30,000,000 |
Common stock, par value (in dollars per share) | $ / shares | $ 0.01 |
Common stock, number of votes per share | Vote | 10 |

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- Definition The maximum number of nonredeemable convertible preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References No definition available. + Details
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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4313-108586 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4304-108586 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123431023&loc=d3e4332-108586 + Details
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