Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities
Net income	$ 27,048	$ 55,567	$ 21,686
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	35,231	30,792	27,967
Deferred income taxes	469	(9,731)	2,298
(Income) loss from discontinued operations	394	(14,389)	(2,366)
Restructuring charges	2,956	1,637	3,793
Impairment charges	96	884	3,049
Gain on sale of facility and related land	0	0	(4,775)
Gains on dispositions of property and other assets	(690)	(958)	(265)
Share-based compensation expense	3,848	2,930	5,221
Excess tax benefit from share-based compensation arrangements	(418)	(114)	(422)
Other non-cash items, net	5,394	5,386	4,870
Change in operating assets and liabilities (excluding the impact of acquisitions):
Receivables	(16,665)	(10,441)	1,246
Inventories	4,872	(2,555)	7,663
Accounts payable	(2,619)	18,128	(15,436)
Restructuring liabilities	(2,572)	(5,276)	(4,841)
Accrued compensation	1,469	3,663	(11,707)
Customer deposits	408	(6,406)	(20,965)
Income taxes payable	67	1,543	218
Other assets and liabilities, net	989	(12,570)	(11,179)
Net cash provided by operating activities	60,277	58,090	6,055
Cash flows from investing activities
Capital expenditures	(29,839)	(29,389)	(36,119)
Cash paid for acquired businesses	(430)	(120,251)	(647)
Proceeds from dispositions of property and other assets	1,542	1,109	464
Proceeds from possessory interest and personal property - discontinued operations	0	28,000	0
Proceeds from sale of facility and related land	0	0	12,696
Proceeds from sale of land—discontinued operations	0	0	1,645
Net cash used in investing activities	(28,727)	(120,531)	(21,961)
Cash flows from financing activities
Proceeds from borrowings	50,000	189,512	20,000
Payments on debt and capital lease obligations	(62,969)	(61,461)	(11,362)
Acquisition of business - deferred consideration	(896)	0	0
Dividends paid on common stock	(8,036)	(38,387)	(58,914)
Common stock purchased for treasury	(4,816)	(12,321)	(1,328)
Debt issuance costs	0	(1,671)	0
Excess tax benefit from share-based compensation arrangements	418	114	422
Proceeds from exercise of stock options	1,041	1,155	777
Net cash provided by (used in) financing activities	(25,258)	76,941	(50,405)
Effect of exchange rate changes on cash and cash equivalents	(6,751)	(3,331)	(2,039)
Net change in cash and cash equivalents	(459)	11,169	(68,350)
Cash and cash equivalents, beginning of year	56,990	45,821	114,171
Cash and cash equivalents, end of year	56,531	56,990	45,821
Supplemental disclosure of cash flow information
Cash paid for income taxes	10,114	8,389	8,498
Cash paid for interest	4,199	1,703	1,006
Property and equipment acquired under capital leases	1,008	881	832
Property and equipment purchases in accounts payable and accrued liabilities	$ 2,320	$ 780	$ 3,204