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Statements of Consolidated Cash Flows (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
OPERATING ACTIVITIES    
Net income $ 5,413 $ 3,424
Adjustments to reconcile net income to net cash provided by (used in) operations:    
Depreciation and amortization 5,602 6,196
Provision for accounts receivable allowances 132 320
Provision for inventory reserves 864 784
Deferred income taxes (815) (1,109)
Share-based compensation expense 506 436
Excess tax benefits from share-based awards (8) (20)
Other - net 412 96
Changes in operating assets and liabilities    
Accounts receivable 116 2,648
Inventories (1,585) (2,043)
Trade accounts payable and accrued liabilities 887 2,699
Income taxes payable (1,695) (2,883)
Other - net 207 (2,892)
NET CASH PROVIDED BY OPERATING ACTIVITIES 10,036 7,656
INVESTING ACTIVITIES    
Capital expenditures (19,677) (4,640)
Proceeds from the sale of property and equipment 61 526
Restricted cash and purchase of fixed-term deposits (1,314) (1,195)
NET CASH USED IN INVESTING ACTIVITIES (20,930) (5,309)
FINANCING ACTIVITIES    
Increase in notes payable to banks 337 883
Proceeds from the issuance of long-term debt 43,132 26,623
Payments of long-term debt (28,862) (27,608)
Dividends paid (2,102) (2,331)
Excess tax benefits from share-based awards 8 20
Proceeds from issuance of common shares 110 60
Purchase of common shares for treasury (2,032) (204)
Purchase of common shares for treasury from related parties (33) (140)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 10,558 (2,697)
Effects of exchange rate changes on cash and cash equivalents (1,914) 1,437
Net increase in cash and cash equivalents (2,250) 1,087
Cash and cash equivalents at beginning of year 30,393 29,643
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 28,143 $ 30,730