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Disaggregation Of Relevant Expense Captions - Schedule Of Other Operating Cost And Expense, By Component (Parenthetical) (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2021
Disaggregation Of Relevant Expense Captions [Abstract]
Employee retention tax credit refunds	$ 4,500,000	$ 10,161,000

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- Definition

Disaggregation of relevant expense captions.

+ References

No definition available.

+ Details

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Namespace Prefix:	acic_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Employee retention tax credit refund.

+ References

No definition available.

+ Details

Name:	acic_EmployeeRetentionTaxCreditRefund
Namespace Prefix:	acic_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant