XML 44 R33.htm IDEA: XBRL DOCUMENT
v3.23.3

Investments (Details 2) - USD ($) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Dec. 31, 2022
Estimated fair value | $ 3,213,318 | $ 2,771,652
Hedge Funds [Member] |  |
Cost | 1,987,040 | 1,987,040
Gross gains | 1,226,278 | 784,612
Estimated fair value | 3,213,318 | 2,771,652
Total [Member] |  |
Cost | 17,986,783 | 18,086,700
Gross gains | 225,001 | 158,635
Gross losses | (4,304,133) | (4,410,945)
Estimated fair value | 13,907,651 | 13,834,390
Preferred Stock [Member] |  |
Cost | 13,583,942 | 13,583,942
Gross gains | 0 | 0
Gross losses | (3,384,701) | (3,589,313)
Estimated fair value | 10,199,241 | 9,994,629
Common stock, mutual fund and exchange traded funds [Member] |  |
Cost | 4,402,841 | 4,502,758
Gross gains | 225,001 | 158,635
Gross losses | (919,432) | (821,632)
Estimated fair value | $ 3,708,410 | $ 3,839,761

X
- References No definition available. + Details
Name: | king_GrossGains
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | king_GrossLosses
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | king_OtherInvestmentsAtCost
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=king_HedgeFundMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=king_AggregateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=king_PreferredStockEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=king_CommonStockMutualFundAndExchangeTradeFundEquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |