Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Notes Tables
Notes Details

Fair Value Measurements (Details 2)

v2.4.0.6

Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012 Warrants	Jun. 30, 2011 Warrants Minimum	Jun. 30, 2011 Warrants Maximum	Jun. 30, 2012 Carrying Value	Mar. 31, 2012 Carrying Value	Jun. 30, 2012 Estimated Fair Value	Mar. 31, 2012 Estimated Fair Value
Fair Value Measurements
Obligations under the credit facility				$ 13,010	$ 10,431	$ 13,010	$ 10,431
Assumptions for calculating fair value of warrants
Risk-free interest rates range (as a percent)	0.20%	0.10%	1.50%
Remaining contractual term (in years)	1 year 2 months 12 days	7 months 6 days	4 years 10 months 24 days
Expected volatility range (as a percent)	65.80%	65.60%	83.30%

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

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- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. Fair value of lines of credit at the balance sheet date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Line-of-Credit Arrangement

-URI http://asc.fasb.org/extlink&oid=6517033

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