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RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS - Additional Information (Details)	4 Months Ended
	Dec. 31, 2020
Restatement [Abstract]
Percentage of minimum acceptance of shareholders of tender offer provision	50.00%

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- Definition

Percentage of minimum acceptance of shareholders of tender offer provision.

+ References

No definition available.

+ Details

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Namespace Prefix:	chfw_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	chfw_RestatementAbstract
Namespace Prefix:	chfw_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration