XML 142 R114.htm IDEA: XBRL DOCUMENT
v3.22.4

Shareholders' Equity and Share-Based Compensation - Stock Option Information by Ranges of Exercise Prices (Details) - $ / shares | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, options (in shares) | 1,194,352 | 1,032,128 |
Total outstanding options, weighted average option price per share (in usd per share) | $ 39.41 | $ 39.10 |
Total outstanding options, weighted average remaining term | 6 years 25 days |  |
Vested and exercisable options (in shares) | 766,444 | 592,701 |
Vested and exercisable options, weighted average option price per share (in usd per share) | $ 38.60 | $ 37.94 | $ 36.59
Vested and exercisable options, weighted average remaining term | 4 years 11 months 4 days |  |
Range One |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, options (in shares) | 195,192 |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 30.81 |  |
Total outstanding options, weighted average remaining term | 2 years 7 months 2 days |  |
Vested and exercisable options (in shares) | 195,192 |  |
Vested and exercisable options, weighted average option price per share (in usd per share) | $ 30.81 |  |
Vested and exercisable options, weighted average remaining term | 2 years 7 months 2 days |  |
Range One | Minimum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 28.88 |  |
Range One | Maximum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 32.35 |  |
Range Two |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, options (in shares) | 525,180 |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 40.07 |  |
Total outstanding options, weighted average remaining term | 7 years 8 months 15 days |  |
Vested and exercisable options (in shares) | 191,968 |  |
Vested and exercisable options, weighted average option price per share (in usd per share) | $ 39.19 |  |
Vested and exercisable options, weighted average remaining term | 6 years 6 months 14 days |  |
Range Two | Minimum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 38.05 |  |
Range Two | Maximum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 41.39 |  |
Range Three |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, options (in shares) | 473,980 |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 42.22 |  |
Total outstanding options, weighted average remaining term | 5 years 8 months 8 days |  |
Vested and exercisable options (in shares) | 379,284 |  |
Vested and exercisable options, weighted average option price per share (in usd per share) | $ 42.31 |  |
Vested and exercisable options, weighted average remaining term | 5 years 3 months 25 days |  |
Range Three | Minimum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 41.83 |  |
Range Three | Maximum |  |  |
Summary of options outstanding segregated by ranges of exercise prices |  |  |
Total outstanding options, weighted average option price per share (in usd per share) | $ 42.95 |  |

X
- Definition Share based compensation arrangement by share based payment award options vested and exercisable outstanding number. + References No definition available. + Details
Name: | hmn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableOutstandingNumber
Namespace Prefix: | hmn_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by share based payment award options vested and exercisable weighted average exercise price. + References No definition available. + Details
Name: | hmn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableWeightedAverageExercisePrice
Namespace Prefix: | hmn_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share based compensation arrangement by share based payment award options vested and exercisable weighted average remaining contractual term. + References No definition available. + Details
Name: | hmn_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsVestedAndExercisableWeightedAverageRemainingContractualTerm
Namespace Prefix: | hmn_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | hmn_ShareBasedCompensationStockOptionActivitiesByExerciseRangeAbstract
Namespace Prefix: | hmn_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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