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3. Operating Lease: Components of lease expense (Details) - USD ($)
$ in Thousands
Jun. 28, 2019
May 02, 2019
Dec. 31, 2018
Notes to Financial Statements      
Operating lease right-of-use asset $ 2,675 $ 2,742 $ 187
Operating lease liability, current portion 293   188
Operating lease liability, net of current portion $ 2,347   $ 0