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Investments - Debt Securities and Other Investments, Included on Condensed Consolidated Balance Sheet and Recorded at Fair Value (Detail) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | $ 30,331 | $ 30,199
Gross Unrealized Gains | 2 | 38
Gross Unrealized Losses | (1,061) | (171)
Fair Value | 29,272 | 30,066
Corporate Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 10,854 | 10,776
Gross Unrealized Gains | 1 | 6
Gross Unrealized Losses | (286) | (35)
Fair Value | 10,569 | 10,747
Municipal Fixed-Rate Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 1,563 | 1,553
Gross Unrealized Gains |  | 2
Gross Unrealized Losses | (49) | (4)
Fair Value | 1,514 | 1,551
Asset-Backed Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 1,018 | 322
Gross Unrealized Gains | 1 | 3
Gross Unrealized Losses | (16) | (3)
Fair Value | 1,003 | 322
Mortgage/Agency-Backed Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 4,199 | 4,754
Gross Unrealized Gains |  | 15
Gross Unrealized Losses | (185) | (33)
Fair Value | 4,014 | 4,736
U.S. Government Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 12,287 | 12,251
Gross Unrealized Gains |  | 12
Gross Unrealized Losses | (503) | (92)
Fair Value | 11,784 | 12,171
Foreign Government Bonds [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Amortized Cost | 410 | 543
Gross Unrealized Losses | (22) | (4)
Fair Value | $ 388 | $ 539

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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