Debt Obligations - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 26, 2018	Mar. 31, 2018	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jul. 11, 2018
Debt Instrument [Line Items]
Accretion of discount on NuvoGen obligation					$ (9,125)	$ 147,753
Repayment of outstanding principal and interest					4,276,988
Loss on extinguishment of Growth Term Loan					105,064
Warrants to purchase common stock, shares		18,123
Warrants exercise price		$ 7.73
Revolving loan cost			$ 71,126		71,126
MidCap Credit Facility
Debt Instrument [Line Items]
Accretion of discount on NuvoGen obligation			39,910		$ 83,766
Credit facility aggregate principal amount	$ 20,000,000
Line of credit facility interest rate at the end of the period	9.34%
Line of credit facility, expiration period	36 months
Line of credit facility first anniversary early termination fee percentage	3.00%
Line of credit facility second anniversary early termination fee percentage	2.00%
Line of credit facility third anniversary early termination fee percentage	1.00%
Origination fee	$ 100,000
Line of credit facility termination fee	4.50%
Amount required to deposit in escrow account	$ 3,300,000
Escrow deposit								$ 3,300,000
Minimum amount in deposit account subject to control agreement	$ 20,000,000
Credit facility, covenant terms					Commencing with the calendar quarter ending on the later of (a) June 30, 2019 and (b) the last day of the calendar quarter in which MidCap Tranche 2 is funded, the Company must also comply with a financial covenant relating to trailing twelve-month minimum Net Revenue requirements (as defined in the MidCap Credit Facility), tested on a quarterly basis
Credit Facility increase in interest on obligation percentage	3.00%
Percentage of weighted average closing price	150.00%
Fair value of warrants	$ 74,000
Debt discount			648,204		$ 648,204
MidCap Credit Facility | MidCap Tranche 1
Debt Instrument [Line Items]
Credit facility aggregate principal amount	$ 7,000,000
Line of credit facility interest rate	7.25%
Credit facility, basis spread on variable rate	1.25%
Credit facility, basis spread on variable rate description	one-month LIBOR
Warrants to purchase of common stock expiration year	10 years
Warrants to purchase common stock, shares	18,123
Warrants exercise price	$ 7.73
MidCap Credit Facility | MidCap Tranche 2
Debt Instrument [Line Items]
Credit facility aggregate principal amount	$ 13,000,000
Line of credit facility interest rate	7.25%
Credit facility, basis spread on variable rate	1.25%
Credit facility, basis spread on variable rate description	one-month LIBOR
Warrants to purchase of common stock expiration year	10 years
Percentage of warrants to purchase common stock	2.00%
Revolving Credit Facility
Debt Instrument [Line Items]
Amortization of deferred financing costs			4,058		8,294
Credit facility aggregate principal amount	$ 2,000,000
Line of credit facility interest rate	4.25%
Credit facility, basis spread on variable rate	1.25%
Credit facility, basis spread on variable rate description	one-month LIBOR
Line of credit facility first anniversary early termination fee percentage	3.00%
Line of credit facility second anniversary early termination fee percentage	2.00%
Line of credit facility third anniversary early termination fee percentage	1.00%
Credit facility outstanding amount			0		0
Credit facility origination fee percentage	0.50%
Credit facility, unused line fee percentage	0.50%
Credit facility collateral management fee percentage	0.50%
Credit facility minimum drawn balance percentage	20.00%
Revolving loan cost			71,126		71,126
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Credit facility additional borrowing capacity	$ 8,000,000
Growth Term Loan
Debt Instrument [Line Items]
Accretion of discount on NuvoGen obligation					0		$ 58,538
Amortization of deferred financing costs			0	$ 4,362	2,982	14,950
Repayment of outstanding principal and interest		$ 4,300,000
Loss on extinguishment of Growth Term Loan			0		105,064
Unamortized discounts			67,272		67,272
Growth Term Loan | Oxford Finance, LLC and Silicon Valley Bank
Debt Instrument [Line Items]
Accretion of discount on NuvoGen obligation			$ 0	$ 89,836	$ 59,969	$ 310,567