Represents payment on maturity date.

No definition available.

Name:	crawa_DebtInstrumentPaymentOnMaturityDate
Namespace Prefix:	crawa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents the percent of eligible accounts used in determining the the maximum borrowing amount under the credit facility agreement.

+ References

No definition available.

+ Details

Name:	crawa_LineOfCreditFacilityPercentOfEligibleAccounts
Namespace Prefix:	crawa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percent of eligible inventory used in determining the the maximum borrowing amount under the credit facility agreement.

+ References

No definition available.

+ Details

Name:	crawa_LineOfCreditFacilityPercentOfEligibleInventory
Namespace Prefix:	crawa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Represents the percent of eligible progress billing accounts used in determining the the maximum borrowing amount under the credit facility agreement.

+ References

No definition available.

+ Details

Name:	crawa_LineOfCreditFacilityPercentOfEligibleProgressBillingAccounts
Namespace Prefix:	crawa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments including both interest and principal payments.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

Name:	us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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+ Details

Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LineOfCreditFacilityAxis=crawa_JPMorganChaseBankMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=crawa_TermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_PrimeRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
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Period Type:

Note 8 - Bank Debt (Details Textual) - USD ($)		6 Months Ended
Note 8 - Bank Debt (Details Textual) - USD ($)	Jul. 05, 2018	Jun. 30, 2021	Jun. 30, 2022	Dec. 31, 2021	Mar. 02, 2021	Sep. 30, 2019
Line of Credit Facility, Maximum Borrowing Capacity			$ 8,200,000	$ 13,700,000
J P Morgan Chase Bank [Member] \| Term Debt [Member]
Long-term Debt, Total					$ 6,000,000
Debt Instrument, Periodic Payment, Total		$ 111,111
Debt Instrument, Payment on Maturity Date		$ 222,223
J P Morgan Chase Bank [Member] \| Term Debt [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.25%
J P Morgan Chase Bank [Member] \| Term Debt [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	2.25%
J P Morgan Chase Bank [Member] \| Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 12,000,000				$ 30,000,000	$ 20,000,000
Line of Credit Facility, Percent of Eligible Accounts	80.00%
Line of Credit Facility, Percent of Eligible Progress Billing Accounts	50.00%
Line of Credit Facility, Percent of Eligible Inventory	50.00%
Line of Credit Facility, Commitment Fee Percentage	0.25%
J P Morgan Chase Bank [Member] \| Revolving Credit Facility [Member] \| Prime Rate [Member]
Debt Instrument, Basis Spread on Variable Rate	0.25%
J P Morgan Chase Bank [Member] \| Revolving Credit Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	1.75%
J P Morgan Chase Bank [Member] \| Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	$ 3,000,000