XML 60 R49.htm IDEA: XBRL DOCUMENT v3.24.1.u1

Note 10 - Distributions - Distribution Activity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended	12 Months Ended	24 Months Ended
	Apr. 26, 2024	Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023	Dec. 31, 2023	Dec. 31, 2023
Distributions declared per share (in dollars per share)		$ 0.38	$ 0.33			$ 1.37
Dividends, cash		$ 5,199				$ 41,881
Dividends, shares (in shares)		24,315				145,743
Dividends, stock				$ 273		$ 1,833
August 16, 2024 Dividend [Member] | Forecast [Member]
Distributions declared per share (in dollars per share)	$ 0.11
July 17, 2024 Dividend [Member] | Forecast [Member]
Distributions declared per share (in dollars per share)	0.11
First 2/23/2024 Dividend [Member]
Record date		May 17, 2024
Payment date		Jun. 14, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 0
Dividends, shares (in shares)		0
Dividends, stock		$ 0
June 17, 2024 Dividend [Member] | Forecast [Member]
Distributions declared per share (in dollars per share)	$ 0.11
Second 2/23/2024 Dividend [Member]
Record date		Apr. 18, 2024
Payment date		May 15, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 0
Dividends, shares (in shares)		0
Dividends, stock		$ 0
Third 2/23/2024 Dividend [Member]
Record date		Mar. 19, 2024
Payment date		Apr. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.05
Dividends, cash		$ 1,625
Dividends, shares (in shares)		7,598
Dividends, stock		$ 85
Fourth 2/23/2024 Dividend [Member]
Record date		Mar. 19, 2024
Payment date		Apr. 16, 2024
Distributions declared per share (in dollars per share)		$ 0.11
Dividends, cash		$ 3,574
Dividends, shares (in shares)		16,717
Dividends, stock		$ 188
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					$ 3,463
Dividends, shares (in shares)					18,257
Dividends, stock					$ 210
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

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_August162024DividendMember
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_July172024DividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=hrzn_First2232024DividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=hrzn_June172024DividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=hrzn_Second2232024DividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=hrzn_Third2232024DividendMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=hrzn_Fourth2232024DividendMember
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: