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Acquisitions and Investments (Schedule of Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	May 13, 2014 Specialized Industries LP
Business Acquisition [Line Items]
Cash				$ 2,025
Accounts receivable				16,417
Inventory				46,490
Prepaid expenses				3,223
Deferred income tax assets				1,106
Rental equipment				27,923
Property, plant & equipment				12,886
Intangible assets				57,457
Other assets				675
Deferred income tax liabilities				(3,863)
Other liabilities assumed				(10,765)
Net assets assumed				153,574
Goodwill	73,594	32,073	30,923	39,383
Preliminary Purchase Price				$ 192,957