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Lease Commitments (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Jan. 01, 2021
Dec. 27, 2019
Lessee Lease Description [Line Items]      
Weighted average remaining lease term 1 year    
Weighted average discount rate 4.00%    
Operating lease payments $ 2.6    
Lease expense $ 1.0 $ 2.5 $ 2.8
Lessee, operating lease not yet commenced description As of December 31, 2021, the Company does not have any additional operating leases that have not yet commenced that create significant rights and obligations for the Company.    
Minimum [Member]      
Lessee Lease Description [Line Items]      
Operating leases terms 1 year    
Maximum [Member]      
Lessee Lease Description [Line Items]      
Operating leases terms 4 years