Supplemental Consolidated Balance Sheet Information (Components of Other Non-Current Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Supplemental Consolidated Balance Sheet Information [Abstract]
Deferred business liabilities	$ 14,783	$ 4,326
Deferred rent - long-term	11,034	9,429
Commitments on abandoned real estate	487	453
Interest rate swap liabilities	515	42
Other non-current liabilities	8,787	6,195
Total non-current liabilities	$ 35,606	$ 20,445

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- Definition

Liabilities On Abandoned Real Estate, Other Non-Current Liabilities

+ References

No definition available.

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- Definition

Other Liabilities Relating To Non-current

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- Definition

For a classified balance sheet, the cumulative difference between the rental income or payments required by a lease agreement and the rental income or expense recognized on a straight-line basis, or other systematic and rational basis more representative of the time pattern in which use or benefit is granted or derived from the leased property, expected to be recognized in income or expense, by the lessor or lessee, respectively, more than one year after the balance sheet date.

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-Publisher FASB

-Name FASB Technical Bulletin (FTB)

-Number 85-3

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-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 19

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Fair value as of the balance sheet date of all interest rate derivative liabilities designated as cash flow hedging instruments.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

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Aggregate carrying amount, as of the balance sheet date, of noncurrent obligations not separately disclosed in the balance sheet. Noncurrent liabilities are expected to be paid after one year (or the normal operating cycle, if longer).

+ References

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

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-Name Accounting Standards Codification

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 24

-Article 5

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