XML 73 R56.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Note 11 - Distributions - Distribution Activity (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Mar. 18, 2024 | Feb. 23, 2024 | Oct. 27, 2023 | Sep. 30, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Distributions declared per share (in dollars per share) |  |  | $ 0.11 | $ 1.37 | $ 1.37 | $ 1.28 | $ 1.25
Dividends, cash |  |  |  | $ 38,418 |  | $ 32,659 |
Dividends, shares (in shares) |  |  |  | 127,486 |  | 61,859 |
Dividends, stock |  |  |  | $ 1,623 |  | $ 754 |
May 16, 2024 Dividend [Member] | Forecast [Member] |  |  |  |  |  |  |
Distributions declared per share (in dollars per share) |  | $ 0.11 |  |  |  |  |
March 18, 2024 Dividend [Member] | Forecast [Member] |  |  |  |  |  |  |
Distributions declared per share (in dollars per share) | $ 0.05 | 0.11 |  |  |  |  |
May 17, 2024 Dividend [Member] | Forecast [Member] |  |  |  |  |  |  |
Distributions declared per share (in dollars per share) |  | $ 0.11 |  |  |  |  |
First 10/27/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  | Feb. 16, 2024 |  |
Payment date |  |  |  |  | Mar. 15, 2024 |  |
Distributions declared per share (in dollars per share) |  |  |  |  | $ 0.11 |  |
Dividends, cash |  |  |  |  | $ 0 |  |
Dividends, shares (in shares) |  |  |  |  | 0 |  |
Dividends, stock |  |  |  |  | $ 0 |  |
Second 10/27/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  | Jan. 18, 2024 |  |
Payment date |  |  |  |  | Feb. 14, 2024 |  |
Distributions declared per share (in dollars per share) |  |  |  |  | $ 0.11 |  |
Dividends, cash |  |  |  |  | $ 3,462 |  |
Dividends, shares (in shares) |  |  |  |  | 15,873 |  |
Dividends, stock |  |  |  |  | $ 210 |  |
Third 10/27/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  | Dec. 19, 2023 |  |
Payment date |  |  |  |  | Jan. 16, 2024 |  |
Distributions declared per share (in dollars per share) |  |  |  |  | $ 0.11 |  |
Dividends, cash |  |  |  |  | $ 3,472 |  |
Dividends, shares (in shares) |  |  |  |  | 14,563 |  |
Dividends, stock |  |  |  |  | $ 199 |  |
Fourth 10/27/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  | Nov. 17, 2023 |  |
Payment date |  |  |  |  | Dec. 15, 2023 |  |
Distributions declared per share (in dollars per share) |  |  |  |  | $ 0.05 |  |
Dividends, cash |  |  |  |  | $ 1,574 |  |
Dividends, shares (in shares) |  |  |  |  | 7,137 |  |
Dividends, stock |  |  |  |  | $ 93 |  |
First 7/28/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Nov. 17, 2023 |  |  |
Payment date |  |  |  | Dec. 15, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,463 |  |  |
Dividends, shares (in shares) |  |  |  | 15,701 |  |  |
Dividends, stock |  |  |  | $ 206 |  |  |
Second 7/28/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Oct. 18, 2023 |  |  |
Payment date |  |  |  | Nov. 11, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,493 |  |  |
Dividends, shares (in shares) |  |  |  | 14,022 |  |  |
Dividends, stock |  |  |  | $ 173 |  |  |
Third 7/28/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Sep. 19, 2023 |  |  |
Payment date |  |  |  | Oct. 16, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,445 |  |  |
Dividends, shares (in shares) |  |  |  | 15,067 |  |  |
Dividends, stock |  |  |  | $ 184 |  |  |
First 4/28/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Aug. 17, 2023 |  |  |
Payment date |  |  |  | Sep. 15, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,458 |  |  |
Dividends, shares (in shares) |  |  |  | 8,665 |  |  |
Dividends, stock |  |  |  | $ 106 |  |  |
Second 4/28/2023 [Member] |  |  |  |  |  |  |
Record date |  |  |  | Jul. 18, 2023 |  |  |
Payment date |  |  |  | Aug. 15, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,427 |  |  |
Dividends, shares (in shares) |  |  |  | 8,307 |  |  |
Dividends, stock |  |  |  | $ 105 |  |  |
Third 4/28/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Jun. 16, 2023 |  |  |
Payment date |  |  |  | Jul. 14, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,434 |  |  |
Dividends, shares (in shares) |  |  |  | 7,424 |  |  |
Dividends, stock |  |  |  | $ 96 |  |  |
First 2/23/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | May 18, 2023 |  |  |
Payment date |  |  |  | Jun. 14, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,087 |  |  |
Dividends, shares (in shares) |  |  |  | 7,128 |  |  |
Dividends, stock |  |  |  | $ 86 |  |  |
Second 2/23/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Apr. 18, 2023 |  |  |
Payment date |  |  |  | May 16, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,068 |  |  |
Dividends, shares (in shares) |  |  |  | 6,705 |  |  |
Dividends, stock |  |  |  | $ 84 |  |  |
Third 2/23/2023 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  | Mar. 17, 2023 |  |  |
Payment date |  |  |  | Apr. 14, 2023 |  |  |
Distributions declared per share (in dollars per share) |  |  |  | $ 0.11 |  |  |
Dividends, cash |  |  |  | $ 3,035 |  |  |
Dividends, shares (in shares) |  |  |  | 6,894 |  |  |
Dividends, stock |  |  |  | $ 81 |  |  |
First 10/28/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Feb. 17, 2023 |
Payment date |  |  |  |  |  | Mar. 15, 2023 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.11 |
Dividends, cash |  |  |  |  |  | $ 3,040 |
Dividends, shares (in shares) |  |  |  |  |  | 6,764 |
Dividends, stock |  |  |  |  |  | $ 75 |
Second 10/28/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Jan. 18, 2023 |
Payment date |  |  |  |  |  | Feb. 15, 2023 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.11 |
Dividends, cash |  |  |  |  |  | $ 3,021 |
Dividends, shares (in shares) |  |  |  |  |  | 5,754 |
Dividends, stock |  |  |  |  |  | $ 74 |
Third 10/28/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Dec. 19, 2022 |
Payment date |  |  |  |  |  | Jan. 13, 2023 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.11 |
Dividends, cash |  |  |  |  |  | $ 2,978 |
Dividends, shares (in shares) |  |  |  |  |  | 5,618 |
Dividends, stock |  |  |  |  |  | $ 69 |
Fourth 10/28/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Nov. 17, 2022 |
Payment date |  |  |  |  |  | Dec. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.05 |
Dividends, cash |  |  |  |  |  | $ 1,319 |
Dividends, shares (in shares) |  |  |  |  |  | 2,171 |
Dividends, stock |  |  |  |  |  | $ 27 |
First 7/29/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Nov. 17, 2022 |
Payment date |  |  |  |  |  | Dec. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,638 |
Dividends, shares (in shares) |  |  |  |  |  | 4,341 |
Dividends, stock |  |  |  |  |  | $ 57 |
Second 7/29/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Oct. 18, 2022 |
Payment date |  |  |  |  |  | Nov. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,580 |
Dividends, shares (in shares) |  |  |  |  |  | 4,621 |
Dividends, stock |  |  |  |  |  | $ 60 |
Third 7/29/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Sep. 19, 2022 |
Payment date |  |  |  |  |  | Oct. 14, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,558 |
Dividends, shares (in shares) |  |  |  |  |  | 7,703 |
Dividends, stock |  |  |  |  |  | $ 81 |
First 4/29/22 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Aug. 18, 2022 |
Payment date |  |  |  |  |  | Sep. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,528 |
Dividends, shares (in shares) |  |  |  |  |  | 4,925 |
Dividends, stock |  |  |  |  |  | $ 60 |
Second 4/29/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Jul. 19, 2022 |
Payment date |  |  |  |  |  | Aug. 16, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,484 |
Dividends, shares (in shares) |  |  |  |  |  | 3,939 |
Dividends, stock |  |  |  |  |  | $ 55 |
Third 4/29/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Jun. 17, 2022 |
Payment date |  |  |  |  |  | Jul. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,434 |
Dividends, shares (in shares) |  |  |  |  |  | 4,286 |
Dividends, stock |  |  |  |  |  | $ 51 |
First 2/25/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | May 18, 2022 |
Payment date |  |  |  |  |  | Jun. 15, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,378 |
Dividends, shares (in shares) |  |  |  |  |  | 4,428 |
Dividends, stock |  |  |  |  |  | $ 50 |
Second 2/25/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Apr. 19, 2022 |
Payment date |  |  |  |  |  | May 16, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,349 |
Dividends, shares (in shares) |  |  |  |  |  | 4,088 |
Dividends, stock |  |  |  |  |  | $ 49 |
Third 2/25/2022 Dividend [Member] |  |  |  |  |  |  |
Record date |  |  |  |  |  | Mar. 18, 2022 |
Payment date |  |  |  |  |  | Apr. 14, 2022 |
Distributions declared per share (in dollars per share) |  |  |  |  |  | $ 0.1 |
Dividends, cash |  |  |  |  |  | $ 2,352 |
Dividends, shares (in shares) |  |  |  |  |  | 3,221 |
Dividends, stock |  |  |  |  |  | $ 46 |

X
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares of common stock issued as dividends during the period. Excludes stock splits. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481112/505-10-50-2 + Details
Name: | us-gaap_CommonStockDividendsShares
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Date the declared dividend will be paid, in YYYY-MM-DD format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482913/230-10-50-3 + Details
Name: | us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_DividendsCommonStockCash
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1 + Details
Name: | us-gaap_DividendsCommonStockStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format. + References No definition available. + Details
Name: | us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix: | us-gaap_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_May162024DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_March182024DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_May172024DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First10272023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second10272023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third10272023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Fourth10272023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First7282023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second7282023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third7282023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First4282023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second4282023Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third4282023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First2232023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second2232023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third2232023DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First10282022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second10282022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third10282022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Fourth10282022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First7292022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second7292022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third7292022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First42922DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second4292022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third4292022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_First2252022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Second2252022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DividendsAxis=hrzn_Third2252022DividendMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |