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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
OPERATING ACTIVITIES:    
Net income $ 13,540 $ 17,810
Adjustments to reconcile net income to net cash flows from operating activities:    
Depreciation and amortization 8,124 6,915
Loss on disposal of property, plant and equipment 7 4
Provision for doubtful accounts 118 148
Issuance of non-employee director shares 200 194
Deferred tax provision 9 399
Changes in operating assets and liabilities:    
Accounts receivable 10,312 19,188
Inventories (24,990) 1,836
Prepaid expenses (3,209) 484
Other assets 190 352
Accounts payable 2,204 (3,355)
Accrued liabilities 531 154
Net cash flows from operating activities 7,036 44,129
INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (7,857) (12,691)
Proceeds from sale of property, plant and equipment 6 43
Net cash flows from investing activities (7,851) (12,648)
FINANCING ACTIVITIES:    
Net payments under credit facility   (4,998)
Payments of cash dividends (6,162) (6,159)
Net payments on other long-term obligations   (297)
Finance lease obligation payments (16) (16)
Net cash flows from financing activities (6,178) (11,470)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS (121) 1,429
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS (7,114) 21,440
CASH AND TEMPORARY INVESTMENTS, beginning of period 57,521 26,072
CASH AND TEMPORARY INVESTMENTS, end of period 50,407 47,512
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:    
Cash payments for interest 1,104 1,659
Cash payments for income taxes, net of refunds $ 5,153 $ 3,925