Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities
Net income	$ 23,228	$ 13,885
Loss from discontinued operations	(28)	(31)
Income from continuing operations	23,256	13,916
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	22,657	19,452
Stock compensation expense	2,675	2,379
Net gain on sale of assets	(7,903)	0
Other non-cash adjustments	3,351	(1,579)
Non-cash charges to interest expense	13	772
(Benefit of) provision for deferred income taxes	(724)	77
Changes in operating assets and liabilities, excluding the effects of acquisitions:
Accounts receivable	(28,085)	(33,031)
Inventories	7,562	(5,526)
Other current assets and other assets	(529)	(1,202)
Accounts payable	9,845	22,260
Accrued expenses and other non-current liabilities	12,370	667
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	44,488	18,185
Net cash used in operating activities of discontinued operations	0	(40)
Net cash provided by operating activities	44,488	18,145
Cash Flows from Investing Activities
Cash paid for acquisitions	(140,620)	0
Net proceeds from sale of property and equipment	26,392	5,958
Purchases of property, plant, and equipment	(6,822)	(19,180)
Other investing activities	1,154	121
Net cash used in investing activities	(119,896)	(13,101)
Cash Flows from Financing Activities
Proceeds from long-term debt	58,192	0
Long-term debt payments	(47,592)	(407)
Purchase of treasury stock at market prices	(568)	(505)
Net proceeds from issuance of common stock	237	508
Excess tax benefit from stock compensation	0	99
Net cash provided by (used in) financing activities	10,269	(305)
Effect of exchange rate changes on cash	(2,140)	(765)
Net (decrease) increase in cash and cash equivalents	(67,279)	3,974
Cash and cash equivalents at beginning of year	110,610	$ 97,039
Cash and cash equivalents at end of period	$ 43,331

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

+ Details

Name:	us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 15

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

Name:	us-gaap_RepaymentsOfLongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration