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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.

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Debt and Warrants - Warrants (Details)		1 Months Ended				3 Months Ended		6 Months Ended		12 Months Ended
Debt and Warrants - Warrants (Details)	Jul. 19, 2019 $ / shares	Mar. 31, 2019 USD ($) Y $ / shares shares	Oct. 31, 2018 USD ($) Y $ / shares shares	Aug. 31, 2018 USD ($) Y shares	Nov. 30, 2016 USD ($) Y $ / shares shares	Jun. 30, 2019 USD ($) Y $ / shares shares	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) Y $ / shares shares	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) shares
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Amount of shares issued									$ 2,259,282
Warrant Activity
Number of warrants issued to purchase shares of common stock (in shares) \| shares					1,587	9,580		9,580
Exercise price (in dollars per share) \| $ / shares						$ 49.00		$ 49.00
Unit Price \| $ / shares	$ 2.00
Reimbursement of expense								$ 3,000
Term		4 months						5 years
Warrant liability						$ 5,182,273		$ 5,182,273		$ 220,376
Warrants granted \| shares								1,203,740		30,951
Warrants expired \| shares								551		859
Change in warrant liability						$ (207,088)	$ (118,489)	$ (161,031)	145,365
Strike price
Warrant Activity
Warrants - Measurement input \| $ / shares						58.80		58.80
Expected life
Warrant Activity
Warrants - Measurement input \| Y						5		5
Volatility
Warrant Activity
Warrants - Measurement input						132		132
Risk free rate
Warrant Activity
Warrants - Measurement input						2.77		2.77
Series A warrants and placement agent warrants \| Expected life
Warrant Activity
Warrants - Measurement input \| Y					5.5
Series A warrants and placement agent warrants \| Volatility
Warrant Activity
Warrants - Measurement input					71.92
Series A warrants and placement agent warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input					1.87
Series A Warrants
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Shares issued (in shares) \| shares					1,587
Warrant Activity
Number of warrants issued to purchase shares of common stock (in shares) \| shares					1,587
Exercise price (in dollars per share) \| $ / shares					$ 787.50
Change in fair value of derivative liability								$ 6,335
Warrant liability					$ 756,000	$ 1,053		$ 1,053		$ 7,388
Series A Warrants \| Strike price
Warrant Activity
Warrants - Measurement input					787.50	787.50		787.50		787.50
Series A Warrants \| Stock price
Warrant Activity
Warrants - Measurement input						4.70		4.70		16.10
Series A Warrants \| Volatility
Warrant Activity
Warrants - Measurement input						145.60		145.60		135.63
Series A Warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input						1.71		1.71		0.0246
Placement agent Warrants
Warrant Activity
Number of warrants issued to purchase shares of common stock (in shares) \| shares					127
Placement agent Warrants \| Strike price
Warrant Activity
Warrants - Measurement input					787.50
Financing Warrants
Warrant Activity
Number of warrants issued to purchase shares of common stock (in shares) \| shares				429
Term				5 years
Warrants expired \| shares				17,582
Financing Warrants \| Strike price
Warrant Activity
Warrants - Measurement input				74.20
Financing Warrants \| Stock price
Warrant Activity
Warrants - Measurement input				74.20
Financing Warrants \| Expected life
Warrant Activity
Warrants - Measurement input				5
Financing Warrants \| Volatility
Warrant Activity
Warrants - Measurement input				126.00
Financing Warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input				3.83
License Transaction Warrants Member
Warrant Activity
Warrant liability				$ 6,312
License Transaction Warrants Member \| Strike price
Warrant Activity
Warrants - Measurement input				74.20
License Transaction Warrants Member \| Stock price
Warrant Activity
Warrants - Measurement input				74.20
License Transaction Warrants Member \| Expected life
Warrant Activity
Warrants - Measurement input \| Y				5
License Transaction Warrants Member \| Volatility
Warrant Activity
Warrants - Measurement input				126
License Transaction Warrants Member \| Risk free rate
Warrant Activity
Warrants - Measurement input				3.83
Underwriter Warrants
Warrant Activity
Exercise price (in dollars per share) \| $ / shares			$ 52.50
Warrant liability			$ 611,286			$ 52,265		$ 52,265		$ 212,988
Warrants granted \| shares			17,142
Change in warrant liability								$ 160,723
Underwriter Warrants \| Strike price
Warrant Activity
Warrants - Measurement input			52.50			52.50		52.50		52.50
Underwriter Warrants \| Stock price
Warrant Activity
Warrants - Measurement input			41.30			4.70		4.70		16.10
Underwriter Warrants \| Expected life
Warrant Activity
Warrants - Measurement input \| Y			5
Underwriter Warrants \| Volatility
Warrant Activity
Warrants - Measurement input			138			145.60		145.60		135.63
Underwriter Warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input			2.51			0.0176		0.0176		0.0251
March 2019 LOC Warrants
Warrant Activity
Warrant liability		$ 116,297				$ 150,970		$ 150,970
Stand-by line of credit		$ 122,000
March 2019 LOC Warrants \| Strike price
Warrant Activity
Warrants - Measurement input \| $ / shares		17.50
March 2019 LOC Warrants \| Stock price
Warrant Activity
Warrants - Measurement input \| $ / shares		19.60
March 2019 LOC Warrants \| Volatility
Warrant Activity
Warrants - Measurement input		146
March 2019 LOC Warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input		2.23
March 2019 Promissory notes
Warrant Activity
Fair value of warrants						$ 34,673		$ 34,673
Minimum \| Financing Warrants
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Amount of shares issued			$ 3,000,000	$ 3,000,000
Common Stock
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Share issue price (in dollars per share) \| $ / shares						$ 4.70		$ 4.70
Securities purchase agreement
Warrant Activity
Change in fair value of derivative liability									$ 9,941
Securities purchase agreement \| March 2019 Ladenburg Warrants
Convertible Promissory Notes and Common Stock Warrants [Line Items]
Shares issued (in shares) \| shares		19,019
Warrant Activity
Number of warrants issued to purchase shares of common stock (in shares) \| shares		746
Exercise price (in dollars per share) \| $ / shares		$ 17.50
Warrant liability		$ 13,028
Securities purchase agreement \| March 2019 Ladenburg Warrants \| Strike price
Warrant Activity
Warrants - Measurement input		17.50
Securities purchase agreement \| March 2019 Ladenburg Warrants \| Stock price
Warrant Activity
Warrants - Measurement input		18.90
Securities purchase agreement \| March 2019 Ladenburg Warrants \| Expected life
Warrant Activity
Warrants - Measurement input \| Y		5
Securities purchase agreement \| March 2019 Ladenburg Warrants \| Volatility
Warrant Activity
Warrants - Measurement input		146
Securities purchase agreement \| March 2019 Ladenburg Warrants \| Risk free rate
Warrant Activity
Warrants - Measurement input		2.21
Common Stock \| License Transaction Warrants Member \| Transaction within six months
Warrant Activity
Warrants exercisable \| shares				952
Common Stock \| License Transaction Warrants Member \| Transaction after six months and within twelve months
Warrant Activity
Warrants exercisable \| shares				476