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Carrying amount of accrued term loan fee as on the balance sheet date that are expected to be paid within one year or within the normal operating cycle, if longer.

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Refers to fair value of warrants classified as equity warrants.

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The warrants repriced in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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Exercise price per share or per unit of warrants or rights outstanding.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The average effective interest rate during the reporting period.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Amount of the cost of borrowed funds accounted for as interest expense.

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Term Loan (Details) - USD ($)				3 Months Ended		9 Months Ended
Term Loan (Details) - USD ($)	Jul. 28, 2017	Feb. 08, 2016	Feb. 05, 2016	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Debt Instrument [Line Items]
Amount received under initial loan agreement						$ 0	$ 24,012,078
Term Loan, Net - Current				$ 11,052,705		11,052,705		$ 5,481,656
Long Term Loan, Net				0		0		18,484,510
Debt instrument, repayment of principal and unpaid interest						14,000,478	0
Interest expense				828,120	$ 781,038	2,999,230	1,939,186
Warrants repriced in connection with debt modification						$ 76,549	$ 0
Warrants [Member]
Debt Instrument [Line Items]
Number of warrants issued (in shares)					83,334		83,334
Warrants exercise price (in dollars per share)					$ 11.34		$ 11.34
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member]
Debt Instrument [Line Items]
Amount received under initial loan agreement		$ 25,000,000
Debt instrument, interest rate			10.25%
Debt instrument, maturity date						Feb. 01, 2020
Debt instrument, minimum cash balance required to be maintained			$ 10,000,000
Term Loan Principal - Current				10,999,522		$ 10,999,522		6,214,057
End Fee Payable				1,771,250		1,771,250		0
Issuance Cost/Loan Discount - Current				(1,718,067)		(1,718,067)		(732,401)
Term Loan, Net - Current				11,052,705		11,052,705		5,481,656
Long Term Loan Principal				0		0		18,785,943
End Fee Payable				0		0		1,771,250
Long Term Loan Discount/Issuance Cost				0		0		(2,072,683)
Long Term Loan, Net				0		$ 0		$ 18,484,510
Debt instrument, repayment of principal and unpaid interest	$ 5,000,000			5,000,000
Prepayment charge	$ 100,000
Second prepayment charge				100,000
Maturity date of amended loan servicing agreement						Aug. 01, 2018
Percentage of stock issuable upon exercise of the warrants	80.00%
Number of days to calculate volume-weighted average price of common stock						30 days
Interest expense				828,120	$ 781,038	$ 2,999,230	$ 1,939,186
Warrants repriced in connection with debt modification						77,000
Additional loan discount				200,000		200,000
Future principal payments for the remainder of 2017				1.0		1.0
Future principal payments for 2018				10.0		10.0
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member] \| Warrants [Member]
Debt Instrument [Line Items]
Number of warrants issued (in shares)			105,691
Warrants exercise price (in dollars per share)	$ 4.62		$ 12.30
Fair value of warrants classified as equity warrants				$ 633,749		$ 633,749
Hercules Capital, Inc. and Hercules Technology III, L.P. [Member] \| Prime Rate [Member]
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate			6.00%