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CONSOLIDATED CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net earnings $ 1,162 $ 3,968
Adjustments to reconcile net earnings to net cash provided by operating activities -    
Depreciation 733 827
Amortization 71 83
Bad debt expense 145 48
Deferred income taxes 360 (12)
Net foreign currency transaction (gains) losses (356) 16
Share-based compensation expense 351 366
Pension expense 111 229
Increase in cash surrender value of life insurance (135) (135)
Changes in operating assets and liabilities -    
Accounts receivable 4,878 816
Inventories 18,704 6,900
Prepaid expenses and other assets 2,176 2,182
Accounts payable (8,477) (7,990)
Accrued liabilities and other (5,410) (3,537)
Accrued income taxes 680 696
Net cash provided by operating activities 14,993 4,457
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchase of marketable securities 0 (1,327)
Proceeds from maturities of marketable securities 4,510 680
Purchases of property, plant and equipment (1,797) (981)
Net cash provided by (used for) investing activities 2,713 (1,628)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Cash dividends paid (4,694) (4,593)
Shares purchased and retired (1,304) (1,828)
Net proceeds from stock options exercised 0 7
Proceeds from bank borrowings 11,883 31,813
Repayments of bank borrowings (18,932) (33,933)
Net cash used for financing activities (13,047) (8,534)
Effect of exchange rate changes on cash and cash equivalents (277) 72
Net increase (decrease) in cash and cash equivalents 4,382 (5,633)
CASH AND CASH EQUIVALENTS at beginning of period 9,799 22,973
CASH AND CASH EQUIVALENTS at end of period 14,181 17,340
SUPPLEMENTAL CASH FLOW INFORMATION:    
Income taxes paid, net of refunds 235 423
Interest paid $ 51 $ 31