6. Employee Retirement Benefit Plans (Tables)

6 Months Ended

Jun. 28, 2019

Table Text Block Supplement [Abstract]

Schedule of Net Periodic Benefit Cost

Components of Net Periodic Benefit Expense

	Supplemental Executive
	Retirement Plan
	June 28,		June 29,
For the six months ended:	2019		2018
Interest cost	$	73	$	68
Amortization of actuarial loss		40		40
Net periodic benefit expense	$	113	$	108

	Supplemental Executive
	Retirement Plan
	June 28,		June 29,
For the three months ended:	2019		2018
Interest cost	$	36	$	34
Amortization of actuarial loss		20		20
Net periodic benefit expense	$	56	$	54