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Investments - Breakdown of Investments with Unrealized Losses (Detail) $ in Thousands | Dec. 31, 2022 USD ($)
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Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | $ 4,931
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | (182)
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 3,170
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (245)
Total Fair Value | 8,100
Total Unrealized Losses | (427)
Corporate Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 1,367
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | (39)
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 583
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (42)
Total Fair Value | 1,950
Total Unrealized Losses | (81)
Municipal Fixed-Rate Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 0
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | 0
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 180
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (5)
Total Fair Value | 180
Total Unrealized Losses | (5)
Asset-Backed Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 524
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | (14)
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 117
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (10)
Total Fair Value | 641
Total Unrealized Losses | (24)
Mortgage/Agency-Backed Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 825
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | (23)
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 844
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (82)
Total Fair Value | 1,668
Total Unrealized Losses | (105)
U.S. Government Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 2,215
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | (106)
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 1,063
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (82)
Total Fair Value | 3,278
Total Unrealized Losses | (188)
Foreign Government Bonds [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Continuous Unrealized Loss Position for Less than 12 Months, Fair Value | 0
Continuous Unrealized Loss Position for Less than 12 Months, Unrealized Losses | 0
Continuous Unrealized Loss Position for 12 Months or Greater, Fair Value | 383
Continuous Unrealized Loss Position for 12 Months or Greater, Unrealized Losses | (24)
Total Fair Value | 383
Total Unrealized Losses | $ (24)

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