CONSOLIDATED STATEMENTS OF Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net earnings	$ 21,861	$ 20,930
Adjustments to reconcile net earnings to net cash used in operating activities:
Depreciation and amortization	9,338	10,069
Deferred income taxes	21	675
Amortization of marketable security premiums	1,216	1,503
Changes in operating assets and liabilities:
Accounts receivable	12,535	21,748
Other receivables	(4,522)	1,877
Inventories	(36,460)	(31,639)
Prepaid expenses and other assets	2,138	1,823
Accounts payable and accrued liabilities	1,820	(142)
Income taxes payable	79	(6,102)
Postretirement health care benefits	(423)	(615)
Deferred compensation and other liabilities	776	1,521
Net cash from operating activities	8,379	21,648
CASH FLOWS FROM INVESTING ACTIVITIES:
Restricted cash	(22)	(2)
Capital expenditures	(7,427)	(10,389)
Purchases of trading securities	(3,007)	(2,774)
Sales of trading securities	435	613
Purchase of available for sale securities	(40,622)	(34,826)
Sale and maturity of available for sale securities	10,985	12,777
Net cash used in investing activities	(39,658)	(34,601)
CASH FLOWS FROM FINANCING ACTIVITIES:
Shares purchased and retired	(20,140)	(9,166)
Dividends paid in cash	(11,282)	(11,077)
Proceeds from bank loans	724	1,762
Repayment of bank loans	(965)	(1,764)
Net cash used in financing activities	(31,663)	(20,245)
Effect of exchange rate changes on cash	1,601	(997)
Decrease in cash and cash equivalents	(61,341)	(34,195)
Cash and cash equivalents at beginning of year	119,145	126,145
Cash and cash equivalents at end of year	57,804	91,950
Supplemental cash flow information:
Income taxes paid	8,798	15,390
Interest paid	31	9
Stock dividend issued	$ 69,739	$ 61,671