XML 72 R61.htm IDEA: XBRL DOCUMENT
v3.20.2

EQUITY AWARDS - Schedule of Nonvested Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018
Number of Shares |  |  |  |
Outstanding at beginning of year (in shares) | 251,120 | 331,560 | 331,560 |
Granted (in shares) | 39,000 | 35,000 |  |
Vested (in shares) | (53,340) | (54,340) |  |
Forfeited (in shares) | (32,600) | (23,600) |  |
Balance (in shares) | 204,180 | 288,620 | 251,120 | 331,560
Weighted-Average Exercise Price |  |  |  |
Outstanding at beginning of year (in USD per share) | $ 28.18 | $ 27.74 | $ 27.74 |
Granted (in USD per share) | 27.43 | 29.85 |  |
Vested (in USD per share) | 27.79 | 28.10 |  |
Forfeited (in USD per share) | 29.68 | 33.03 |  |
Balance (in USD per share) | $ 27.98 | $ 27.78 | $ 28.18 | $ 27.74
Weighted-Average Remaining Contractual Life in Years |  |  |  |
Outstanding | 6 years 10 months 13 days | 7 years 1 month 28 days | 7 years 3 months 21 days | 7 years 9 months 7 days
Granted | 9 years 6 months 3 days | 9 years 7 months 9 days |  |
Vested | 6 years 6 months 18 days | 7 years 5 months 23 days |  |
Forfeited | 8 years 1 month 13 days | 9 years 2 months 4 days |  |
Aggregate Intrinsic Value |  |  |  |
Outstanding | $ 1,188 | $ 975 | $ 975 |
Granted | 24 | 26 |  |
Vested | 28 | 172 |  |
Forfeited | 24 | 46 |  |
Outstanding | $ 60 | $ 949 | $ 1,188 | $ 975

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