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CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2012
Mar. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES    
Net earnings $ 5,194 $ 6,707
Adjustments to reconcile net earnings to net cash provided by operating activities:    
Depreciation and amortization 3,828 3,419
Increase to allowance for doubtful accounts 38 226
Increase to inventory reserves 1,197 704
Amortization of deferred gain on sale of buildings (262) (262)
Gain on disposal of property, plant and equipment (6) (7)
Equity income from joint ventures 0 (44)
Employee Stock Ownership Plan allocation 966 629
Stock-based compensation 443 325
Decrease in deferred income taxes 1,501 2,049
Loss on discontinued operations, net of tax 300 304
Change in assets and liabilities:    
Increase in accounts receivable (18,101) (34,902)
Increase in inventories (13,013) (261)
Increase in prepaid expenses and other current assets (297) (599)
Increase in accounts payable 16,706 13,614
Decrease in sundry payables and accrued expenses (6,893) (4,324)
Net changes in other assets and liabilities (637) 542
Net cash used in operating activities (9,036) (11,880)
CASH FLOWS FROM INVESTING ACTIVITIES    
Proceeds from the sale of property, plant and equipment 6 28
Divestiture of joint ventures 0 1,000
Capital expenditures (2,442) (2,351)
Net cash used in investing activities (2,436) (1,323)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net borrowings under line-of-credit agreements 6,000 7,098
Principal payments of long-term debt and capital lease obligations (21) (21)
Increase in overdraft balances 4,868 8,432
Proceeds from exercise of employee stock options 307 43
Excess tax benefits related to the exercise of employee stock grants 7 1
Dividends paid (2,055) (1,586)
Net cash provided by financing activities 9,106 13,967
Effect of exchange rate changes on cash 777 733
Net increase (decrease) in cash and cash equivalents (1,589) 1,497
CASH AND CASH EQUIVALENTS at beginning of year 10,871 12,135
CASH AND CASH EQUIVALENTS at end of year 9,282 13,632
Cash paid during the year for:    
Interest 411 430
Income taxes $ 1,158 $ 2,279