INVESTMENT IN FINANCE LEASE (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Components of the investment in sales-type leases [Abstract]
Net minimum lease payments receivable	$ 101,097	$ 112,404
Estimated residual values of leased property (unguaranteed)	20,320	20,320
Less: unearned income	(66,062)	(75,834)
Total investment in sales-type lease	55,355	56,890
Current portion	1,824	1,535
Long-term portion	53,531	55,355
Total investment in sales-type lease	55,355	56,890
Future minimum gross revenues [Abstract]
2012	11,337
2013	11,307
2014	11,307
2015	11,307
2016	11,338
Thereafter	44,501
Total minimum lease revenues	$ 101,097

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Future minimum lease rental payments receivable for the five years following the balance sheet date and the future minimum payment amount in total on nonoperating leases (direct financing, sales-type and leveraged leases).

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- Definition

Future rental payments receivable within one year of the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged leases).

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- Definition

Future lease rental payments receivable after the fifth year from the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged 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)

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Future lease rental payments receivable within the fifth year from the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged leases).

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Future lease rental payments receivable within the fourth year from the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged leases).

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Future lease rental payments receivable within the third year from the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged leases).

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Future rental payments receivable within the second year from the balance sheet date on nonoperating leases (direct financing, sales-type and leveraged leases).

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- Definition

The net amount due within one year of the balance sheet date or the normal operating cycle, if longer, consisting of: (a) minimum lease payments on sales type leases and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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The net amount due after one year of the balance sheet date or beyond the normal operating cycle, if longer, consisting of: (a) minimum lease payments on sales type leases, and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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

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-SubTopic 30

-Section 50

-Paragraph 4

-Subparagraph (a)

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The net investment in sales type leases as of the balance sheet date consisting of: (a) minimum lease payments on sales type leases and (b) unguaranteed residual value; less: (i) executory costs, (ii) unearned income, and (iii) the accumulated allowance for uncollectible minimum lease payments.

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- Definition

The remaining (unamortized) difference between the gross investment in a sales-type lease and the cost or carrying amount of the leased property as of the balance sheet date.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 23

-Subparagraph a(i)(d)

-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 Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 17

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

-Publisher FASB

-Name Accounting Standards Codification

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Amount of remaining payments as of the balance sheet date that lessees are obligated to make or can be required to make under sales-type leases, including any guarantee of residual value and executory costs. The amount also includes any guaranteed rental payments by an unrelated third-party provided that are financially capable of making such payments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 840

-SubTopic 10

-Section 25

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6915991&loc=d3e34102-112682

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.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 13

-Paragraph 5

-Subparagraph j

-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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The estimate of the lease property's economic value at the end of the sales-type lease term excluding any amounts guaranteed by either the lessee or a third-party.

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