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Stockholders' Equity and Equity Compensation Plans (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2014
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Remaining number of shares available for repurchase | 2,100,000 |  | 2,100,000 |  |
Repurchase of common stock for employee tax withholdings, shares | 2,000 | 2,000 | 168,000 | 125,000 |
Repurchase of common stock for tax withholdings, value | $ 100 | $ 100 | $ 9,400 | $ 7,900 |
Cash dividends declared per common share | $ 0.28 | $ 0.265 |  |  |
Cash dividend | $ 8,900 | $ 8,500 | $ 17,700 | 17,100 |
Stock warrants term |  |  |  |  | 10 years
Stock warrants, exercise price |  |  |  |  | $ 26.68
Performance based awards granted to executive management and certain key employees shares |  |  | 134,000 |  |
Vesting maturity date |  |  | first quarter of 2025 |  |
Vesting period |  |  | 2 years |  |
Stock-based compensation expense | $ 7,600 | $ 6,500 | $ 14,056 | $ 12,117 |
Market-based Awards |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Awards vested |  |  | 45,000 |  |
Restricted common stock |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Awards vested | 34,000 |  | 472,000 |  |
Restricted common stock | Minimum |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Vesting period |  |  | 2 years |  |
Restricted common stock | Maximum |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Vesting period |  |  | 3 years |  |
Comcast |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Issuance of stock warrants |  |  |  |  | 2,900,000
Stock warrants issued | 1,000,000.0 |  | 1,000,000.0 |  |
Stock warrants vested |  |  | 0 |  |
SEC Rule 10b5-1 Plan |  |  |  |  |
Stockholders Equity And Equity Compensation Plans [Line Items] |  |  |  |  |
Repurchase of common stock, shares |  | 360,000 |  | 626,000 |
Total amount paid |  | $ 21,600 |  | $ 37,600 |
Weighted-average price per share |  | $ 59.88 |  | $ 59.99 |

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- Definition Exercise price per share or per unit of warrants or rights outstanding. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644 + Details
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