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Statements of Consolidated Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
OPERATING ACTIVITIES    
Net income $ 5,528 $ 1,518
Adjustments to reconcile net income to net cash provided by (used in) operations:    
Depreciation and amortization 3,265 2,972
Provision for accounts receivable allowances 201 287
Provision for inventory reserves 869 457
Deferred income taxes (154) (289)
Share-based compensation expense 731 561
Gain on sale of property and equipment (31) (7)
Other - net 183 193
Changes in operating assets and liabilities    
Accounts receivable (2,635) (6,144)
Inventories (4,818) (1,517)
Trade accounts payable and accrued liabilities (3,112) (210)
Income taxes - net 1,733 1,997
Other - net (2,787) (1,387)
NET CASH USED IN OPERATING ACTIVITIES (1,027) (1,569)
INVESTING ACTIVITIES    
Capital expenditures (2,699) (2,217)
Proceeds from the sale of property and equipment 0 17
Purchase of marketable securities (4,308) 0
Fixed-term deposits 0 2,469
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES (7,007) 269
FINANCING ACTIVITIES    
Increase (decrease) in notes payable to banks 936 (695)
Proceeds from the issuance of long-term debt 20,303 15,463
Payments of long-term debt (11,112) (13,155)
Dividends paid (1,008) (1,037)
Purchase of common shares for treasury (110) 0
Purchase of common shares for treasury from related parties (723) (107)
NET CASH PROVIDED BY FINANCING ACTIVITIES 8,286 469
Effects of exchange rate changes on cash, cash equivalents and restricted cash 939 1,046
Net increase in cash, cash equivalents and restricted cash 1,191 215
Cash, cash equivalents and restricted cash at beginning of year [1] 45,579 32,540
CASH, CASH EQUIVALENTS AND RESTRICTED CASH AT END OF PERIOD [1] $ 46,770 $ 32,755
[1] Includes restricted cash of $1.3 million at March 31, 2018 and $1.2 million at December 31, 2017. For further information regarding restricted cash, refer to Note O, “Debt Arrangements.”