Long-term Debt, Lease Obligations and Interest Rate Caps (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	May 29, 2012	Dec. 31, 2011
Obligations
Outstanding term loan indebtedness under Credit Facility	$ 97,250	$ 98,300	$ 0
Term loan facility	0		99,250
Facility lease obligation	2,334		3,047
Equipment capital leases	5,744		2,815
Total	105,328		105,112
Current portion of long-term debt and lease obligations	(3,496)		(5,770)
Non-current portion of long-term debt and lease obligations	$ 101,832		$ 99,342

Equipment capital leases.

No definition available.

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- Definition

Facility lease obligation.

+ References

No definition available.

+ Details

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- Definition

Long term debt and capital lease obligations both current and noncurrent.

+ References

No definition available.

+ Details

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- Definition

Term loan facility.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Details

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- Definition

Amount borrowed under the credit facility as of the balance sheet date.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

+ Details

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- Definition

Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year or the normal operating cycle, if longer plus capital lease obligations due to be paid more than one year after the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 6

-Section H

+ Details

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- Definition

Obligation related to long-term debt (excluding convertible debt) and capital leases, the portion which is due in one year or less in the future.

+ References

+ Details

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