Summary of Significant Accounting Policies (Details 3) (USD $) In Thousands	Jun. 30, 2011
Amortizable intangible assets
Gross carrying amount	$ 681,605
Accumulated amortization	(196,935)
Net carrying amount	484,670
Customer Relationships and Acquisition Costs.
Amortizable intangible assets
Gross carrying amount	626,375
Accumulated amortization	(176,267)
Net carrying amount	450,108
Core Technology.
Amortizable intangible assets
Gross carrying amount	3,943
Accumulated amortization	(2,220)
Net carrying amount	1,723
Trademarks and Non-Compete Agreements
Amortizable intangible assets
Gross carrying amount	3,038
Accumulated amortization	(2,302)
Net carrying amount	736
Deferred Financing Costs
Amortizable intangible assets
Gross carrying amount	48,249
Accumulated amortization	(16,146)
Net carrying amount	$ 32,103

The accumulated amount of amortization of a major finite-lived intangible asset class. 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 45
-Subparagraph a(1)

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- Definition

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(1)

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- Definition

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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- Definition

The aggregate sum of gross carrying value of a major finite-lived intangible asset class, less accumulated amortization and any impairment charges. 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(1)

+ Details

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