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Schedule II. Condensed Financial Information of Registrant - Condensed Statements of Cash Flows (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating activities |  |  |
Net cash provided by operating activities | $ 29,842 | $ 28,194 | $ 37,979
Investing activities |  |  |
Purchases of property and equipment | (553) | (2,089) | (1,296)
Net cash provided by investing activities | 43,884 | 75,426 | 70,959
Financing activities |  |  |
Finance lease purchases | (91) | (58) | (44)
Share-based compensation related tax withholding | (944) |  |
Purchase of treasury stock | (2,171) | (12,388) |
Dividends to shareholders | (93,307) | (100,427) | (99,929)
Net cash used in financing activities | (96,513) | (112,873) | (99,973)
Change in cash and cash equivalents | (22,787) | (9,253) | 8,965
Cash and cash equivalents at beginning of year | 61,469 | 70,722 | 61,757
Cash and cash equivalents at end of year | 38,682 | 61,469 | 70,722
Parent Company [Member] |  |  |
Operating activities |  |  |
Net cash provided by operating activities | 5,591 | 6,121 | 6,622
Investing activities |  |  |
Purchases of investments | (24,885) | (31,909) | (87,289)
Proceeds from sales of investments | 35,013 | 75,950 | 28,780
Purchases of property and equipment | (482) | (1,903) | (1,277)
Dividends from subsidiary | 56,000 | 77,700 | 148,400
Net cash provided by investing activities | 65,646 | 119,838 | 88,614
Financing activities |  |  |
Finance lease purchases | (91) | (58) | (44)
Share-based compensation related tax withholding | (944) |  |
Purchase of treasury stock | (2,171) | (12,388) |
Dividends to shareholders | (93,307) | (100,427) | (99,929)
Net cash used in financing activities | (96,513) | (112,873) | (99,973)
Change in cash and cash equivalents | (25,276) | 13,086 | (4,737)
Cash and cash equivalents at beginning of year | 31,911 | 18,825 | 23,562
Cash and cash equivalents at end of year | $ 6,635 | $ 31,911 | $ 18,825

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- Definition Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-8 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-4 + Details
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- Definition Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 1 -SubTopic 230 -Topic 830 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481877/830-230-45-1 + Details
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- Definition Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 + Details
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- Definition Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 24 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-24 + Details
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- Definition The cash outflow to reacquire common stock during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-15 + Details
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