XML 113 R86.htm IDEA: XBRL DOCUMENT
v3.8.0.1

STOCK OPTIONS - Schedule of Nonvested Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Number of Shares |  |  |
Outstanding at beginning of year (in shares) | 250,700,000 | 267,200,000 |
Granted (in shares) | 159,598,000 | 49,500,000 |
Vested (in shares) | (54,500,000) | (47,700,000) |
Forfeited (in shares) | (19,000,000) | (18,300,000) |
Balance (in shares) | 336,798,000 | 250,700,000 | 267,200,000
Weighted-Average Exercise Price |  |  |
Outstanding at beginning of year (in USD per share) | $ 23.73 | $ 23.72 |
Granted (in USD per share) | 27.80 | 23.58 |
Vested (in USD per share) | 23.72 | 23.72 |
Forfeited (in USD per share) | 25.58 | 23.22 |
Balance (in USD per share) | $ 25.54 | $ 23.73 | $ 23.72
Weighted-Average Remaining Contractual Life in Years |  |  |
Outstanding | 7 years 10 months 17 days | 7 years 7 months 24 days | 8 years 2 months 19 days
Granted | 9 years 4 months 24 days | 9 years 4 months 17 days |
Vested | 6 years 4 months 6 days | 6 years 11 months 12 days |
Forfeited | 8 years 7 months 2 days | 7 years 8 months 27 days |
Aggregate Intrinsic Value |  |  |
Outstanding | $ 69 | $ 0 |
Granted | 480 | 21 |
Vested | 378 | 14 |
Forfeited | 109 | 16 |
Outstanding | $ 1,747 | $ 69 | $ 0

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeited, Intrinsic Value + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsForfeitedIntrinsicValue
Namespace Prefix: | gnty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeited, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsForfeitedWeightedAverageRemainingContractualTerm
Namespace Prefix: | gnty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Intrinsic Value + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantedinPeriodIntrinsicValue
Namespace Prefix: | gnty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Granted in Period, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsGrantedinPeriodWeightedAverageRemainingContractualTerm
Namespace Prefix: | gnty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Intrinsic Value + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedIntrinsicValue
Namespace Prefix: | gnty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Intrinsic Value [Abstract] + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedIntrinsicValueAbstract
Namespace Prefix: | gnty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Exercise Price [Roll Forward] + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedWeightedAverageExercisePriceRollForward
Namespace Prefix: | gnty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedWeightedAverageRemainingContractualTerm
Namespace Prefix: | gnty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Remaining Contractual Term [Abstract] + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsNonvestedWeightedAverageRemainingContractualTermAbstract
Namespace Prefix: | gnty_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Intrinsic Value + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsVestedIntrinsicValue
Namespace Prefix: | gnty_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested, Weighted Average Remaining Contractual Term + References No definition available. + Details
Name: | gnty_SharebasedCompensationArrangementbySharebasedPaymentAwardOptionsVestedWeightedAverageRemainingContractualTerm
Namespace Prefix: | gnty_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Gross number of share options (or share units) granted during the period. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
Name: | us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedNumberOfSharesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of non-vested options forfeited. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of non-vested options outstanding. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedNumberOfShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average grant-date fair value of options vested. + References No definition available. + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsVestedWeightedAverageGrantDateFairValue
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration