Amount of investment in debt and equity securities categorized neither as trading securities nor held-to-maturity securities and intended be sold or mature one year or operating cycle, if longer.

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

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

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-Paragraph 4, 5

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-Name Statement of Financial Accounting Standard (FAS)

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 45

-Paragraph 2

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+ Details

- Definition

Investments in debt and equity securities which are categorized neither as trading securities nor held-to-maturity securities, which are intended be sold or mature within one year from the balance sheet date or the normal operating cycle, whichever is longer, and that are pledged to one or more secured parties who have the right to buy, sell, or re-pledge the collateral.

+ References

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

-Publisher AICPA

-Name Statement of Position (SOP)

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-Publisher FASB

-Name Accounting Standards Codification

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

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Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher OTS

-Name Federal Regulation (FR)

-Number Title 12

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-Paragraph 4

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Number 5

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+ Details

- Definition

Fair values as of the balance sheet date of all liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments, and which are expected to be extinguished or otherwise disposed of after one year or beyond the normal operating cycle, if longer, net of the effects of master netting arrangements.

+ References

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

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-Publisher FASB

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-Name Accounting Standards Codification

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-Publisher FASB

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+ Details

Fair Value (Assets and Liabilities Measured on a Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable securities – unrestricted	$ 21,410	$ 27,241
Marketable securities – restricted	14,837	14,500
Warrants	(206)	(295)
Fair Value, Inputs, Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable securities – unrestricted	21,410
Marketable securities – restricted	14,837
Warrants	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable securities – unrestricted	0
Marketable securities – restricted	0
Warrants	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Marketable securities – unrestricted	0
Marketable securities – restricted	0
Warrants	(206)
Warrant [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants	206	295	531	380
Warrant [Member] \| Change During Period [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Warrants	$ (89)		$ 151