Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value Current

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- Definition

Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value Noncurrent

+ References

No definition available.

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- Definition

Less Fair Value Of Warrants Exercised

+ References

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- Definition

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

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-Subparagraph (SX 210.5-03.8)

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 8

-Article 5

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- Definition

Amount of the total principal payments made during the annual reporting period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

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-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

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- Definition

Amount of expense (income) related to adjustment to fair value of warrant liability.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 480

-SubTopic 10

-Section 25

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6939902&loc=d3e20148-110875

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- Definition

Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)

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- Definition

Cash received from principal payments made on loans related to operating activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

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Fair Value Measurement - Roll Forward for Liabilities Measured at Fair Value Using Significant Unobservable Inputs (Level 3) (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Add loan proceeds									$ 5,775,543us-gaap_ProceedsFromLoans
Less repayments of principal	(3,857,971)								(3,857,971)
Add change in fair value of warrants	2,327,000us-gaap_FairValueAdjustmentOfWarrants	4,076,000us-gaap_FairValueAdjustmentOfWarrants	(3,654,000)us-gaap_FairValueAdjustmentOfWarrants	(327,000)us-gaap_FairValueAdjustmentOfWarrants	2,828,000us-gaap_FairValueAdjustmentOfWarrants	(144,000)us-gaap_FairValueAdjustmentOfWarrants	758,000us-gaap_FairValueAdjustmentOfWarrants	(189,000)us-gaap_FairValueAdjustmentOfWarrants	(2,422,451)us-gaap_FairValueAdjustmentOfWarrants	(3,253,253)us-gaap_FairValueAdjustmentOfWarrants	5,944,571us-gaap_FairValueAdjustmentOfWarrants
Outstanding Warrants [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2013				5,541,809					5,541,809
Less fair value of warrants exercised									(1,434,807)
Add change in fair value of warrants									(2,422,451)
Balance at December 31, 2014	1,684,551								1,684,551
Balance at December 31, 2014	1,684,551								1,684,551
Loan Payable [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Balance at December 31, 2013				12,909,244					12,909,244
Add loan proceeds									5,775,543
Less repayments of principal	(3,857,971)								(3,857,971)
Add accretion of discount									193,601
Balance at December 31, 2014	15,020,417								15,020,417
Current portion	4,686,388								4,686,388
Non-current portion	10,334,029								10,334,029
Balance at December 31, 2014	$ 15,020,417								$ 15,020,417