XML 16 R6.htm IDEA: XBRL DOCUMENT
v3.25.3

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (Parenthetical) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Common Stock |  |  |
Stock offering costs | $ 360,670 | $ 338,063 | $ 259,825

X
- Definition Issuance of Common Stock, Offering Costs + References No definition available. + Details
Name: | king_IssuanceOfCommonStockOfferingCosts
Namespace Prefix: | king_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |