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Leases (Narrative) (Details) $ in Millions	3 Months Ended	9 Months Ended
	Oct. 01, 2021 USD ($)	Oct. 01, 2021 USD ($)
Lessee Lease Description [Line Items]
Weighted average remaining lease term	2 years 2 months 12 days	2 years 2 months 12 days
Weighted average discount rate	4.00%	4.00%
Operating lease payments	$ 0.6	$ 1.9
Lessee, operating lease not yet commenced description		As of October 1, 2021, the Company does not have any additional operating leases that have not yet commenced
Minimum [Member]
Lessee Lease Description [Line Items]
Operating leases terms	1 year	1 year
Maximum [Member]
Lessee Lease Description [Line Items]
Operating leases terms	4 years	4 years

X

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Description of lessee's operating lease that has not yet commenced. Including, but not limited to, nature of involvement with construction or design of underlying asset for lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918673-209980

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 3
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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977

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Weighted average discount rate for operating lease calculated at point in time.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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