The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 44

-Subparagraph a(3)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (a)(3)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275

Name:	us-gaap_AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

Acquisitions (Schedule Of Acquisition Of Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified			0 Months Ended						0 Months Ended		0 Months Ended
	Sep. 30, 2011 STAKO [Member]	Sep. 30, 2011 STAKO [Member] Customer Relationships [Member]	Sep. 30, 2011 STAKO [Member] Non-Compete Agreements [Member]	Sep. 30, 2011 STAKO [Member] Trade Name [Member]	Sep. 30, 2011 STAKO [Member] Maximum [Member] Customer Relationships [Member]	Sep. 30, 2011 STAKO [Member] Minimum [Member] Customer Relationships [Member]	Jul. 01, 2011 Bernz [Member]	Jul. 01, 2011 Bernz [Member] Customer Relationships [Member]	Jul. 01, 2011 Bernz [Member] Non-Compete Agreements [Member]	Jul. 01, 2011 Bernz [Member] Trade Name [Member]	Jul. 01, 2011 Bernz [Member] Maximum [Member] Customer Relationships [Member]	Jul. 01, 2011 Bernz [Member] Minimum [Member] Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired indefinite-lived intangible asset										$ 8,500
Acquired intangible assets	$ 4,400	$ 2,500	$ 400	$ 1,500			$ 21,300	$ 10,500	$ 2,300
Useful Life (Years)			3	10	15	10			5		13	9