Net Investment in Sales-Type Leases (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Net Investment in Sales-Type Leases [Abstract]
2013	$ 5,778
2014	5,034
2015	3,955
2016	2,712
2017	2,015
Thereafter	171
Capital Leases, Future Minimum Payments Receivable	$ 19,665

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Amount of minimum lease payments to be received by the lessor for capital leases.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6952072&loc=d3e45377-112738

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 23

-Subparagraph a(i)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Amount of minimum lease payments to be received by the lessor in the sixth rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

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Amount of minimum lease payments to be received by the lessor in the fifth rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

+ Details

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Amount of minimum lease payments to be received by the lessor in the fourth rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

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- Definition

Amount of minimum lease payments to be received by the lessor in the third rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

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- Definition

Amount of minimum lease payments to be received by the lessor in the second rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

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Amount of minimum lease payments to be received by the lessor in the next rolling twelve months following the latest balance sheet presented for capital leases.

+ References

No definition available.

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