XML 44 R33.htm IDEA: XBRL DOCUMENT v3.22.2.2

Investments (Details 1) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Residential Mortgage And Other Asset Backed Securities [Member]
Amortized cost	$ 54,307,907	$ 58,036,959
Estimated fair value	47,343,348	57,783,342
Less Than One Year [Member]
Amortized cost	14,852,441	1,153,099
Estimated fair value	14,824,136	1,156,636
One To Five Years [Member]
Amortized cost	44,959,185	43,007,110
Estimated fair value	42,305,309	44,914,759
Five To Ten Years [Member]
Amortized cost	30,271,976	26,808,853
Estimated fair value	24,680,308	27,332,581
More Than 10 Years [Member]
Amortized cost	21,142,958	26,802,457
Estimated fair value	16,152,606	26,892,792
Total [Member]
Amortized cost	165,534,467	158,080,110
Estimated fair value	$ 145,305,707	$ 155,808,478

X

- References

No definition available.

+ Details

Name:	king_AmortizedCost
Namespace Prefix:	king_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	king_FairValue
Namespace Prefix:	king_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=king_ResidentialMortgageAndOtherAssetBackedSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=king_LessThanOneYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=king_OneToFiveYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=king_FiveToTenYearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=king_MoreThan10YearsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PlanNameAxis=king_TotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: