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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
OPERATING ACTIVITIES:    
Consolidated net income $ 3,996 $ 4,556
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 1,849 1,850
Loss on disposal of equipment 4  
Provision for doubtful accounts 92 154
Stock-based compensation    200
Excess tax benefit from stock-based compensation (127) (119)
Issuance of non-employee director shares 75 75
Deferred income tax provision 12 49
Changes in operating assets and liabilities:    
Accounts receivable (20,592) (6,552)
Inventories (6,577) (62)
Prepaid expenses (979) (214)
Accounts payable 18,341 (3,069)
Accrued liabilities 3,107 (1,621)
Net cash flows from operating activities (799) (4,753)
INVESTING ACTIVITIES:    
Purchases of property, plant and equipment (1,721) (1,292)
Proceeds from sale of property, plant and equipment   1
Payments received on notes receivable 57 8
Net cash flows from investing activities (1,664) (1,283)
FINANCING ACTIVITIES:    
Payments on long-term obligations   (5)
Payments of cash dividends (3,142) (2,876)
Proceeds from stock option exercises 415 351
Excess tax benefit from stock-based compensation 127 119
Additions to deferred financing activities   (11)
Net cash flows from financing activities (2,600) (2,422)
EFFECT OF EXCHANGE RATE CHANGES ON CASH AND TEMPORARY INVESTMENTS (115) (935)
NET CHANGE IN CASH AND TEMPORARY INVESTMENTS (5,178) (9,393)
CASH AND TEMPORARY INVESTMENTS, beginning of period 48,591 50,153
CASH AND TEMPORARY INVESTMENTS, end of period 43,413 40,760
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:    
Cash payments for interest 433 545
Cash payments for income taxes, net of refunds $ 334 $ 3,214