Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 16,192	$ 5,608
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,882	21,314
Deferred income taxes	548	(5,217)
Restructuring charges	1,550	2,795
Losses (gains) on dispositions of property and other assets	(64)	51
Share-based compensation expense	3,284	2,748
Excess tax benefit from share-based compensation arrangements	(54)
Other non-cash items, net	3,532	3,281
Change in operating assets and liabilities:
Receivables	(16,154)	(12,801)
Inventories	(883)	8,723
Accounts payable	12,665	12,536
Restructuring liabilities	(3,362)	(5,866)
Accrued compensation	3,536	7,018
Customer deposits	(3,975)	2,670
Income taxes payable	2,036	1,983
Other assets and liabilities, net	(5,665)	429
Net cash provided by operating activities	35,068	45,272
Cash flows from investing activities:
Capital expenditures	(17,251)	(11,609)
Acquisition of businesses, net of cash acquired	(41,105)
Proceeds from dispositions of property and other assets	315	14,630
Net cash provided by (used in) investing activities	(58,041)	3,021
Cash flows from financing activities:
Payments on debt and capital lease obligations	(6,544)	(3,944)
Dividends paid on common stock	(2,435)	(2,466)
Common stock purchased for treasury	(5,230)	(6,906)
Debt issuance costs	(1,001)
Excess tax benefit from share-based compensation arrangements	54
Proceeds from exercise of stock options	163	38
Net cash used in financing activities	(14,993)	(13,278)
Effect of exchange rate changes on cash and cash equivalents	(3,322)	770
Net increase (decrease) in cash and cash equivalents	(41,288)	35,785
Cash and cash equivalents, beginning of year	145,841	116,342
Cash and cash equivalents, end of period	104,553	152,127
Supplemental disclosure of cash flow information
Income taxes	7,805	5,680
Interest	804	792
Equipment acquired under capital leases	$ 1,097	$ 590