Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6523643

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GOODWILL AND OTHER INTANGIBLE ASSETS, Goodwill balance by reportable segment (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($) ReportingUnit	Dec. 31, 2014 USD ($)	Jan. 02, 2014 USD ($)
Goodwill [Line Items]
Number of reporting units \| ReportingUnit	8
Amount of aggregate goodwill	$ 256,213	$ 253,312
Reportable Segment [Member]
Goodwill [Line Items]
Amount of aggregate goodwill		180,300
B27, LLC [Member]
Goodwill [Line Items]
Amount of aggregate goodwill			$ 178,300
Service Centers [Member]
Goodwill [Line Items]
Amount of aggregate goodwill	170,203	167,302
Service Centers [Member] \| B27, LLC [Member]
Goodwill [Line Items]
Amount of aggregate goodwill	73,000	73,000
Innovative Pumping Solutions [Member]
Goodwill [Line Items]
Amount of aggregate goodwill	68,872	68,872
Innovative Pumping Solutions [Member] \| B27, LLC [Member]
Goodwill [Line Items]
Amount of aggregate goodwill	73,000	73,000
Supply Chain Services [Member]
Goodwill [Line Items]
Amount of aggregate goodwill	$ 17,138	$ 17,138