Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 28, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net earnings	$ 20,879,000	$ 14,107,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Provision for depreciation	1,386,000	1,899,000
Intangibles amortization	114,000	0
Non-cash retirement plan expense	193,000	359,000
Other	350,000	65,000
Changes in operating accounts:
Accounts receivable, net	(10,915,000)	15,626,000
Inventories	(3,808,000)	(20,486,000)
Other assets and current assets	(9,882,000)	2,273,000
Accounts payable and accrued liabilities	11,293,000	(5,406,000)
Federal and state income taxes	5,023,000	(577,000)
Net cash provided by operating activities	14,633,000	7,860,000
Cash flows from investing activities:
Marketable securities purchased	(38,084,000)	(95,301,000)
Marketable securities - maturities and sales	18,635,000	138,583,000
Purchase of property, plant and equipment	(733,000)	(3,566,000)
Proceeds from insurance settlement	0	807,000
Net cash (used in) provided by investing activities	(20,182,000)	40,523,000
Cash flows from financing activities:
Dividends paid	(42,172,000)	(42,087,000)
Proceeds from sale of treasury stock	528,000	518,000
Other	(27,000)	(223,000)
Net cash used in financing activities	(41,671,000)	(41,792,000)
Net (decrease) increase in cash and cash equivalents	(47,220,000)	6,591,000
Cash and cash equivalents at beginning of period	79,579,000	56,847,000
Cash and cash equivalents at end of period	$ 32,359,000	$ 63,438,000