XML 65 R49.htm IDEA: XBRL DOCUMENT
v3.23.1

Investments (Details 2) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Gross gains | $ 0 | $ 276,340
Estimated fair value | 2,771,652 | 7,561,415
Hedge Funds [Member] |  |
Cost | 1,987,040 | 3,999,381
Gross gains | 784,612 | 3,562,034
Estimated fair value | 2,771,652 | 7,561,415
Equity Securities [Member] |  |
Cost | 18,086,700 | 37,470,669
Gross gains | 158,635 | 2,580,662
Gross losses | (4,410,945) | (364,329)
Estimated fair value | 13,834,390 | 39,687,002
Preferred Stock [Member] |  |
Cost | 13,583,942 | 22,019,509
Gross gains | 0 | 1,007,009
Gross losses | (3,589,313) | (184,617)
Estimated fair value | 9,994,629 | 22,841,901
Common stock, mutual fund and exchange traded funds [Member] |  |
Cost | 4,502,758 | 15,451,160
Gross gains | 158,635 | 1,573,653
Gross losses | (821,632) | (179,712)
Estimated fair value | $ 3,839,761 | $ 16,845,101

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 -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(f,g)) -URI https://asc.fasb.org/extlink&oid=126734703&loc=d3e572229-122910 + 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_CollateralAxis=us-gaap_EquitySecuritiesMember
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: |