XML 53 R43.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Investments In Securities (Schedule Of Unrealized Losses On Investments) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Government obligations |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | $ 1,014 | $ 1,042
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (14) | (1)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0
Total temporarily impaired securities, Total Fair Value | 1,014 | 1,042
Total temporarily impaired securities, Unrealized Losses | (14) | (1)
General Obligations Us States And Political Subdivisions Debt Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 9,152 | 4,560
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (146) | (27)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 3,370 | 3,535
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (158) | (23)
Total temporarily impaired securities, Total Fair Value | 12,522 | 8,095
Total temporarily impaired securities, Unrealized Losses | (304) | (50)
Issuer Obligations Us States And Political Subdivisions Debt Securities Special Revenues [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 22,523 | 13,551
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (290) | (61)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 6,019 | 4,023
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (292) | (104)
Total temporarily impaired securities, Total Fair Value | 28,542 | 17,574
Total temporarily impaired securities, Unrealized Losses | (582) | (165)
Corporate Debt Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 10,194 | 3,744
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (78) | (7)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 0 | 0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0 | 0
Total temporarily impaired securities, Total Fair Value | 10,194 | 3,744
Total temporarily impaired securities, Unrealized Losses | (78) | (7)
Total Fixed Maturity Securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Total temporarily impaired securities, Less than 12 Months, Fair Value | 42,883 | 22,897
Total temporarily impaired securities, Less than 12 Months, Unrealized Losses | (528) | (96)
Total temporarily impaired securities, 12 Months or Longer, Fair Value | 9,389 | 7,558
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | (450) | (127)
Total temporarily impaired securities, Total Fair Value | 52,272 | 30,455
Total temporarily impaired securities, Unrealized Losses | $ (978) | $ (223)

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for twelve months or longer. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale in a continuous loss position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27337-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of accumulated unrealized loss on investments in debt and equity securities classified as available-for-sale that have been in a continuous loss position for less than twelve months. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for less than twelve months. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the aggregate fair value of investments in debt and equity securities categorized neither as held-to-maturity nor trading securities that have been in a continuous unrealized loss position for twelve months or longer. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_SovereignDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=itic_GeneralObligationsUsStatesAndPoliticalSubdivisionsDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=itic_IssuerObligationsUsStatesAndPoliticalSubdivisionsDebtSecuritiesSpecialRevenuesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |