XML 86 R72.htm IDEA: XBRL DOCUMENT
v3.22.4

Financial Highlights - Schedule of Financial Highlights (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Investment Company, Financial Highlights [Line Items] |  |  |  |  |  |  |  |  |  |
Net asset value at beginning of period | $ 19.96 | $ 16.81 | $ 16.85 | $ 16.47 | $ 16.05 | $ 15.76 | $ 15.17 | $ 15.16 | $ 15.35 | $ 15.32
Net investment income | 1.90 | 1.03 | 1.62 | 1.31 | 1.43 | 1.44 | 1.45 | 1.64 | 1.62 | 1.43
Net realized gain (loss) on investments, net of tax (provision) | 2.61 | 2.19 | (0.06) | (0.05) | (0.45) | 0.67 | (0.77) | 0.58 | (1.18) | 2.22
Taxes paid on deemed distributions | (0.35) |  |  |  |  |  |  |  |  | (0.21)
Net unrealized appreciation (depreciation) on investments | (2.69) | 1.70 | (0.27) | 0.74 | 1.05 | (0.23) | 1.59 | (0.62) | 0.92 | (1.64)
Realized losses on extinguishment of debt | (0.01) | (0.17) | (0.01) | (0.02) | (0.01) | (0.01) |  |  |  |
Total increase from investment operations | 1.46 | 4.75 | 1.28 | 1.98 | 2.02 | 1.87 | 2.27 | 1.60 | 1.36 | 2.01
Accretive (dilutive) effect of share issuances and repurchases | 0.02 |  | 0.01 |  | 0.01 | 0.02 | (0.05) | 0.02 | 0.19 | 0.18
Dividends declared to stockholders | (1.19) | (1.60) | (1.33) | (1.60) | (1.60) | (1.60) | (1.60) | (1.60) | (0.97) | (1.21)
Distributions from capital gains | (0.81) |  |  |  |  |  |  |  | (0.75) | (0.73)
Other | (0.01) |  |  |  | (0.01) |  | (0.03) | (0.01) | (0.02) | (0.01)
Net asset value at end of period | 19.43 | 19.96 | 16.81 | 16.85 | 16.47 | 16.05 | 15.76 | 15.17 | 15.16 | 15.35
Market value at end of period | $ 19.03 | $ 17.98 | $ 13.10 | $ 14.84 | $ 11.69 | $ 15.18 | $ 15.73 | $ 13.69 | $ 14.85 | $ 21.74
Shares outstanding at end of period | 24,727,788 | 24,437,400 | 24,437,400 | 24,463,119 | 24,463,119 | 24,507,940 | 22,446,076 | 16,300,732 | 16,051,037 | 13,755,232
Weighted average number of shares outstanding - basic | 24,468,172 | 24,437,400 | 24,442,431 |  |  |  |  |  |  |
Weighted average number of shares outstanding - diluted | 24,468,172 | 24,437,400 | 24,442,431 | 24,463,119 | 24,471,730 | 23,527,188 | 18,283,715 | 16,201,449 | 14,346,438 | 13,524,368
Net assets at end of period | $ 480,343 | $ 487,764 | $ 410,760 | $ 412,310 | $ 402,985 | $ 393,273 | $ 353,785 | $ 247,362 | $ 243,263 | $ 211,125
Average net assets | $ 482,594 | $ 437,690 | $ 392,866 | $ 404,284 | $ 398,440 | $ 376,292 | $ 289,453 | $ 245,706 | $ 222,737 | $ 209,136
Total expenses | 12.00% | 15.40% | 11.80% | 11.20% | 10.70% | 9.80% | 11.70% | 11.30% | 10.30% | 11.00%
Net investment income | 9.60% | 5.70% | 10.10% | 7.90% | 8.80% | 9.00% | 9.20% | 10.80% | 10.50% | 9.20%
Total return based on market value |  |  |  |  |  | 3.20% | 23.80% | 2.40% | (23.80%) | 44.00%
Total return based on market value | 17.70% | 53.90% | 1.00% | 37.60% | (15.80%) |  |  |  |  |
Total return based on net asset value | 7.30% | 28.30% | 7.60% | 12.00% | 12.60% | 11.90% | 15.00% | 10.60% | 8.90% | 13.10%
Portfolio turnover ratio |  |  |  |  |  | 29.50% | 29.30% | 22.50% | 18.90% | 44.90%
Portfolio turnover ratio | 23.90% | 47.70% | 25.80% | 17.20% | 29.50% |  |  |  |  |
Average debt outstanding | $ 397,244 | $ 380,997 | $ 385,350 | $ 319,050 | $ 271,560 | $ 219,920 | $ 221,200 | $ 199,340 | $ 152,700 | $ 144,500
Average debt per share | $ 16.24 | $ 15.59 | $ 15.77 | $ 13.04 | $ 11.10 | $ 9.35 | $ 12.10 | $ 12.30 | $ 10.64 | $ 10.68

X
- Definition Accretive (dilutive) effect of share issuances and repurchases. + References No definition available. + Details
Name: | fdus_AccretiveDilutiveEffectOfShareIssuancesAndRepurchases
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average debt per share. + References No definition available. + Details
Name: | fdus_AverageDebtPerShare
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average net assets. + References No definition available. + Details
Name: | fdus_AverageNetAssets
Namespace Prefix: | fdus_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investment company, distributions from capital gains per share. + References No definition available. + Details
Name: | fdus_InvestmentCompanyDistributionsFromCapitalGainsPerShare
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment company, dividends to stockholders per share. + References No definition available. + Details
Name: | fdus_InvestmentCompanyDividendsToStockholdersPerShare
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment company, expense ratio to average net assets. + References No definition available. + Details
Name: | fdus_InvestmentCompanyExpenseRatioToAverageNetAssets
Namespace Prefix: | fdus_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment company, investment income (loss), period increase (decrease). + References No definition available. + Details
Name: | fdus_InvestmentCompanyInvestmentIncomeLossPeriodIncreaseDecrease
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment company, portfolio turnover ratio. + References No definition available. + Details
Name: | fdus_InvestmentCompanyPortfolioTurnoverRatio
Namespace Prefix: | fdus_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment company, total return based on market value. + References No definition available. + Details
Name: | fdus_InvestmentCompanyTotalReturnBasedOnMarketValue
Namespace Prefix: | fdus_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net asset value per share, other. + References No definition available. + Details
Name: | fdus_NetAssetValuePerShareOther
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net unrealized appreciation (depreciation) on investments. + References No definition available. + Details
Name: | fdus_NetUnrealizedAppreciationDepreciationOnInvestments
Namespace Prefix: | fdus_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap-supplement_InvestmentCompanyPortfolioTurnover
Namespace Prefix: | us-gaap-supplement_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap-supplement_InvestmentCompanyTotalReturnMarketValue
Namespace Prefix: | us-gaap-supplement_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of net assets (liabilities). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=77885760&loc=SL35686385-199418 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 45 -Paragraph 3 -URI https://asc.fasb.org/extlink&oid=118262037&loc=d3e9915-115836 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(7)) -URI https://asc.fasb.org/extlink&oid=120401555&loc=SL114874367-224272 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 2 -Subparagraph (SX 210.6-05(4)) -URI https://asc.fasb.org/extlink&oid=120401414&loc=d3e604008-122996 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 220 -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(6)) -URI https://asc.fasb.org/extlink&oid=120401555&loc=SL114874367-224272 + Details
Name: | us-gaap_AssetsNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Per share impact of the gain (loss) on the extinguishment of debt, net of applicable taxes. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126972273&loc=d3e12317-112629 + Details
Name: | us-gaap_ExtinguishmentOfDebtGainLossPerShareNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_InvestmentCompanyFinancialHighlightsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or unit amount of realized and unrealized gain (loss) on investment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 7 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837 + Details
Name: | us-gaap_InvestmentCompanyGainLossOnInvestmentPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or unit amount, after investment expense, of dividend and interest investment income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 7 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837 + Details
Name: | us-gaap_InvestmentCompanyInvestmentIncomeLossPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage of investment income (loss) to average net assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10328-115837 + Details
Name: | us-gaap_InvestmentCompanyInvestmentIncomeLossRatio
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Per share or unit amount of capital distribution in excess of tax basis earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 7 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837 + Details
Name: | us-gaap_InvestmentCompanyTaxReturnOfCapitalDistributionPerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage increase (decrease) in fund net asset value, assuming reinvestment of dividends and capital gain distributions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10411-115837 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 18 -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10396-115837 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 19 -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10403-115837 + Details
Name: | us-gaap_InvestmentCompanyTotalReturn
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Average amount outstanding of long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (a) Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 1402 -Paragraph (b) -Subparagraph (1) + Details
Name: | us-gaap_LongTermDebtAverageAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 54B -URI https://asc.fasb.org/extlink&oid=126972413&loc=SL7495116-110257 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 7 -Subparagraph (h) -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 205 -Section 50 -Paragraph 7 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=25866437&loc=d3e10246-115837 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 6A -URI https://asc.fasb.org/extlink&oid=126976982&loc=SL6742756-110258 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 35 -Paragraph 59 -URI https://asc.fasb.org/extlink&oid=126972413&loc=SL6740821-110257 + Details
Name: | us-gaap_NetAssetValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
Name: | us-gaap_SharePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued which are neither cancelled nor held in the treasury. + References No definition available. + Details
Name: | us-gaap_SharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1505-109256 + Details
Name: | us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1448-109256 + Details
Name: | us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration