LEASED ASSETS (Schedule of right-of-use assets and related lease liabilities) (Details) - USD ($) $ in Thousands	Jun. 27, 2020	Dec. 31, 2019
Operating lease liabilities
Noncurrent portion	$ 1,953	$ 2,176
Total operating lease liabilities	$ 2,393
Weighted average remaining lease term of operating leases	11 years 5 months 12 days
Other assets [Member]
Operating Leased Assets [Line Items]
Right-of-use assets	$ 2,361
Trade accounts payable and accrued expenses [Member]
Operating lease liabilities
Current portion	$ 440