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Statements of Consolidated Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
OPERATING ACTIVITIES    
Net income (loss) $ 2,658 $ (256)
Adjustments to reconcile net income to net cash provided by (used in) operations:    
Depreciation and amortization 2,710 3,250
Provision for accounts receivable allowances (10) 46
Provision for inventory reserves 9 208
Deferred income taxes (23) (1,217)
Share-based compensation expense 363 489
Excess tax benefits from share-based awards 8 (20)
Other - net 9 5
Changes in operating assets and liabilities:    
Accounts receivable (2,368) 2,952
Inventories 1,657 (113)
Trade accounts payable and accrued liabilities (2,331) (4,119)
Income taxes payable (196) (2,006)
Other - net (1,292) 1,383
NET CASH PROVIDED BY OPERATING ACTIVITIES 1,194 602
INVESTING ACTIVITIES    
Capital expenditures (5,508) (2,272)
Proceeds from the sale of property and equipment 61 570
Restricted cash and purchase of fixed-term deposits 3,216 2,277
NET CASH (USED IN) PROVIDED BY INVESTING ACTIVITIES (2,231) 575
FINANCING ACTIVITIES    
Increase in notes payable to banks 351 244
Proceeds from the issuance of long-term debt 15,706 12,879
Payments of long-term debt (11,674) (13,868)
Dividends paid (1,056) (1,110)
Excess tax benefits from share-based awards (8) 20
Proceeds from issuance of common shares 0 40
Purchase of common shares for treasury (627) (74)
Purchase of common shares for treasury from related parties (33) (140)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 2,659 (2,009)
Effects of exchange rate changes on cash and cash equivalents (652) 1,719
Net increase in cash and cash equivalents 970 887
Cash and cash equivalents at beginning of year 30,393 29,643
CASH AND CASH EQUIVALENTS AT END OF PERIOD $ 31,363 $ 30,530