XML 80 R67.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Earnings Per Common Share and Share Awards Summary of Information of Fixed Stock Options (Details) | 12 Months Ended
--- | ---
Dec. 31, 2015 $ / shares shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
Options Outstanding - Number Outstanding | shares | 0
$32.00 - $32.00 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SARs exercise price, lower limit | $ 32.00
SARs exercise price, upper limit | $ 32.00
Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Number of Outstanding Shares | shares | 2,000
SARs Outstanding - Weighted Average Remaining Contractual Life | 4 months 20 days
SARs - Weighted Average Exercise Price | $ 32.00
SARs Exercisable - Number Exercisable | shares | 2,000
SARs Exercisable - Weighted Average Exercise Price | $ 32.00
$33.31 - $33.31 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SARs exercise price, lower limit | 33.31
SARs exercise price, upper limit | $ 33.31
Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Number of Outstanding Shares | shares | 2,500
SARs Outstanding - Weighted Average Remaining Contractual Life | 1 year 4 months 17 days
SARs - Weighted Average Exercise Price | $ 33.31
SARs Exercisable - Number Exercisable | shares | 2,500
SARs Exercisable - Weighted Average Exercise Price | $ 33.31
$36.80 - $73.00 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SARs exercise price, lower limit | 36.80
SARs exercise price, upper limit | $ 73.00
Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Number of Outstanding Shares | shares | 17,500
SARs Outstanding - Weighted Average Remaining Contractual Life | 4 years 8 months 12 days
SARs - Weighted Average Exercise Price | $ 63.30
SARs Exercisable - Number Exercisable | shares | 16,375
SARs Exercisable - Weighted Average Exercise Price | $ 62.63
$32.00 - $73.00 |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items] |
SARs exercise price, lower limit | 32.00
SARs exercise price, upper limit | $ 73.00
Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Number of Outstanding Shares | shares | 22,000
SARs Outstanding - Weighted Average Remaining Contractual Life | 3 years 11 months 4 days
SARs - Weighted Average Exercise Price | $ 57.05
SARs Exercisable - Number Exercisable | shares | 20,875
SARs Exercisable - Weighted Average Exercise Price | $ 56.18

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Plans, Exercise Price Range, Number of Exercisable Shares + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationPlansExercisePriceRangeNumberOfExercisableShares
Namespace Prefix: | itic_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Exercisable Shares, Weighted Average Exercise Price + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeExercisableSharesWeightedAverageExercisePrice
Namespace Prefix: | itic_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Lower Range Limit + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeLowerRangeLimit
Namespace Prefix: | itic_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Number of Outstanding Shares + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeNumberOfOutstandingShares
Namespace Prefix: | itic_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Outstanding Shares, Weighted Average Exercise Price + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeOutstandingAwardsWeightedAverageExercisePrice
Namespace Prefix: | itic_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Outstanding Shares, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeOutstandingSharesWeightedAverageRemainingContractualTerm
Namespace Prefix: | itic_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation, Shares Authorized under Stock Appreciation Rights Plans, Exercise Price Range, Upper Range Limit + References No definition available. + Details
Name: | itic_ShareBasedCompensationSharesAuthorizedUnderStockAppreciationRightsPlansExercisePriceRangeUpperRangeLimit
Namespace Prefix: | itic_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=itic_StockAppreciationRightsExercisePriceRange1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=itic_StockAppreciationRightsExercisePriceRange2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=itic_StockAppreciationRightsExercisePriceRange4Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=itic_StockAppreciationRightsExercisePriceRange5Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |