Debt and Warrants (Details)													1 Months Ended								2 Months Ended	3 Months Ended	12 Months Ended
	Aug. 01, 2018 USD ($)	Aug. 18, 2015 USD ($)	Aug. 15, 2015 USD ($)	Jun. 02, 2015 shares	Dec. 23, 2014 USD ($) item $ / shares shares	Dec. 03, 2014 USD ($) $ / shares	Oct. 31, 2014	Oct. 30, 2014 USD ($) item	Jul. 16, 2014 USD ($) $ / shares shares	Jun. 26, 2014 USD ($) $ / shares shares	Jun. 26, 2014 USD ($) $ / shares shares	Jun. 02, 2014 USD ($) item $ / shares	Aug. 31, 2015 USD ($)	May. 31, 2015 USD ($) shares	Apr. 30, 2015 $ / shares shares	Mar. 31, 2015 USD ($) $ / shares	Feb. 28, 2015 USD ($) item	Oct. 31, 2014	Aug. 31, 2014 USD ($) $ / shares shares	Feb. 28, 2014 USD ($) $ / shares shares	Feb. 28, 2014 USD ($) $ / shares shares	Sep. 30, 2013 USD ($) item shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Mar. 01, 2016	Dec. 22, 2015 USD ($)	Jun. 30, 2015 $ / shares
Debt, Convertible Promissory Notes and Common Stock Warrants
Fair value of warrants																			$ 114,300
Net amount of Notes																							$ 150,000	$ 424,674
Gross aggregate proceeds																							1,250,000	1,100,000
Number of shares issued for notes converted | shares														178,571
Exercise price as a percentage of initial public offering price								80.00%
Interest Paid																							173,250
Stand-by line of credit		$ 8,000,000
Initial loan commitment		6,000,000
Proceeds required to be maintained in cash		$ 4,500,000																					3,000,000			$ 3,000,000
Short-term debt
Net debt obligation																							150,000	424,674
Interest payable on convertible notes payable																							127,149	29,292
Future principal payments of debt
2016																							1,832,500
2017																							2,409,780
2018																							1,757,720
Total																							6,000,000
Long-term debt
Unamortized debt issuance costs																							(250,024)	$ (104,000)
Total																							6,000,000
Current portion of long-term debt																							1,707,899
Long-term debt, net of discount																							$ 4,095,028
Warrant Activity
Warrants outstanding at beginning of period | shares																					207,664		494,267	207,664
Warrants issued | shares																							254,605	286,603
Warrants outstanding at end of period | shares																							748,872	494,267
Transfer Agreement | Manufacturer
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares																$ 6.30
Number of warrants issued to purchase shares of common stock (in shares) | shares										16,666	16,666
Exercise price as a percentage of initial public offering price										90.00%	90.00%
Common Stock
Debt, Convertible Promissory Notes and Common Stock Warrants
Reverse stock split ratio																		0.667
Series A redeemable convertible preferred stock
Debt, Convertible Promissory Notes and Common Stock Warrants
Issuance of redeemable convertible preferred stock, net (in shares) | shares																				2,224,991				3,015,902
Original issue price (in dollars per share) | $ / shares																				$ 2.2472	$ 2.2472
Warrants to purchase common stock | Transfer Agreement | Manufacturer
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares																$ 6.30
Term										5 years
Warrants to purchase common stock | Common Stock | Transfer Agreement | Manufacturer
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares										$ 4.35	$ 4.35
Fair value of warrants										$ 37,840	$ 37,840
Strike price (in dollars per share) | $ / shares										$ 4.83	$ 4.83
Term											5 years
Volatility (as a percent)										49.00%
Dividend yield (as a percent)										0.00%
Risk-free interest rate (as a percent)										1.64%
Number of warrants issued to purchase shares of common stock (in shares) | shares										16,666	16,666
Exercise price as a percentage of initial public offering price										90.00%	90.00%
Standby bridge financing agreement
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares						$ 5.23
Fair value of warrants						$ 505,348
Strike price (in dollars per share) | $ / shares						$ 5.01
Term						5 years
Volatility (as a percent)						63.00%
Dividend yield (as a percent)						0.00%
Risk-free interest rate (as a percent)						1.61%
Net amount of Notes																								$ 392,042
Unamortized note discount								$ 605,348																521,291
Amortization of debt discount																							$ 521,291	84,057
Notes payable																								1,100,000
Number of lenders | item								2
Aggregate principal amount of bridge financing						$ 1,000,000
Interest Paid														$ 1,321,600
Value to be divided by IPO exercise price to determine number of warrants granted																$ 1,000,000
Short-term debt
Notes payable																								1,100,000
Unamortized note discount								$ (605,348)																(521,291)
Net debt obligation																								392,042
Nominal interest																							100,000	20,000
Amortization of debt discount																							521,291	84,057
Repayment premium																							201,600
Debt issuance costs																							86,667	17,333
Debt issuance costs																								(86,667)
Total																							909,558	121,390
Long-term debt
Unamortized note discount								$ (605,348)																(521,291)
Nominal interest																							100,000	20,000
Amortization of debt discount																							521,291	84,057
Total																							909,558	121,390
Standby bridge financing agreement | IPO
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares																$ 5.60
Standby bridge financing agreement | Interest Expense.
Debt, Convertible Promissory Notes and Common Stock Warrants
Term							6 months	6 months
Unamortized note discount								$ 100,000
Amortization of debt discount																							521,291
Additional financing costs								104,000															86,667
Short-term debt
Unamortized note discount								(100,000)
Amortization of debt discount																							521,291
Debt issuance costs								104,000
Long-term debt
Unamortized note discount								$ (100,000)
Amortization of debt discount																							521,291
Convertible notes payable
Debt, Convertible Promissory Notes and Common Stock Warrants
Net amount of Notes																							150,000	424,674
Unamortized note discount																								675,326
Amortization of debt discount																							1,925,326	87,174
Notes payable																							150,000	1,100,000
Short-term debt
Notes payable																							150,000	1,100,000
Unamortized note discount																								(675,326)
Net debt obligation																							150,000	424,674
Nominal interest																							70,619	9,292
Amortization of debt discount																							1,925,326	87,174
Total																							1,995,945	96,466
Interest payable on convertible notes payable																							75,999	29,276
Long-term debt
Unamortized note discount																								(675,326)
Nominal interest																							70,619	9,292
Amortization of debt discount																							1,925,326	87,174
Total																							1,995,945	96,466
Convertible promissory notes
Debt, Convertible Promissory Notes and Common Stock Warrants
Net amount of Notes																				$ 518,105	$ 518,105
Number of convertible promissory notes issued | item																	2					4
Gross aggregate proceeds																						$ 525,000
Interest rate (as a percent)																						8.00%
Number of business days after the date of consummation of the initial closing of a first equity round of financing, when the debt instrument is due																						10 days
Pre-money valuation threshold amount																						$ 3,000,000
Amortization of debt discount																				$ 4,071	1,443
Notes payable																	$ 250,000
Number of shares issued for notes converted | shares																				207,664
Principal and interest paid on debt														103,912
Retirement of convertible promissory notes														$ 100,000
Short-term debt
Notes payable																	250,000
Net debt obligation																				$ 518,105	518,105
Amortization of debt discount																				4,071	1,443
Long-term debt
Amortization of debt discount																				4,071	1,443
Convertible promissory notes | Interest Expense.
Debt, Convertible Promissory Notes and Common Stock Warrants
Unamortized note discount																				$ 6,895	6,895
Warrant term																				5 years
Amortization of debt discount																							1,000,000
Short-term debt
Unamortized note discount																				$ (6,895)	(6,895)
Amortization of debt discount																							1,000,000
Long-term debt
Unamortized note discount																				(6,895)	(6,895)
Amortization of debt discount																							1,000,000
Convertible promissory notes | Dechra Pharmaceuticals PLC
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares															$ 5.60
Interest rate (as a percent)															12.00%
Number of warrants issued to purchase shares of common stock (in shares) | shares															89,285
Notes payable																$ 1,000,000
Investment Warrants Expiration Date															Dec. 31, 2017
Short-term debt
Notes payable																$ 1,000,000
Convertible promissory notes | Warrants to purchase common stock | Common Stock
Debt, Convertible Promissory Notes and Common Stock Warrants
Minimum pre-money valuation amount																				$ 3,000,000	$ 3,000,000
Exercise price as a percentage of purchase price paid by equity investors																				75.00%
Exercise price (in dollars per share) | $ / shares																				$ 2.5281	$ 2.5281
Fair value of warrants																				$ 6,895	$ 6,895
Strike price (in dollars per share) | $ / shares																				$ 2.5281	$ 2.5281
Term																				5 years
Volatility (as a percent)																				64.00%
Dividend yield (as a percent)																				0.00%
Risk-free interest rate (as a percent)																				1.82%
Warrant term																						5 years
Exercise price as a percentage of purchase price paid by equity investors when pre-money valuation threshold amount is achieved																						75.00%
Number of warrants issued to purchase shares of common stock (in shares) | shares																						207,664
Convertible promissary notes issued June 2, 2014
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares												$ 5.60
Interest rate (as a percent)												3.00%
Notes payable												$ 300,000
Number of Accredited Investors | item												2
Aggregate principal amount issued to board member to which Series A preferred stock was sold												$ 200,000
Number of shares issued for notes converted | shares				53,571
Beneficial conversion feature												75,000
Short-term debt
Notes payable												300,000
Convertible promissary notes issued June 2, 2014 | Interest Expense.
Debt, Convertible Promissory Notes and Common Stock Warrants
Amortization of debt discount																							31,250	6,250
Short-term debt
Amortization of debt discount																							31,250	6,250
Long-term debt
Amortization of debt discount																							31,250	6,250
Convertible promissary note issued July 16, 2014
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares									$ 5.60
Interest rate (as a percent)									3.00%
Notes payable									$ 150,000
Number of shares issued for notes converted | shares									26,785
Beneficial conversion feature									$ 37,500
Short-term debt
Notes payable									$ 150,000
Convertible promissary note issued July 16, 2014 | Interest Expense.
Debt, Convertible Promissory Notes and Common Stock Warrants
Amortization of debt discount																							17,857
Short-term debt
Amortization of debt discount																							17,857
Long-term debt
Amortization of debt discount																							17,857
Convertible note purchase agreement
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares					$ 4.15											$ 5.60											$ 5.60
Fair value of warrants					$ 147,943
Strike price (in dollars per share) | $ / shares					$ 4.59
Term					3 years
Volatility (as a percent)					49.00%
Dividend yield (as a percent)					0.00%
Risk-free interest rate (as a percent)					1.10%
Gross aggregate proceeds					$ 650,000
Interest rate (as a percent)					12.00%
Number of warrants issued to purchase shares of common stock (in shares) | shares					58,035
Amortization of debt discount																							141,890
Number of Accredited Investors | item					3
Aggregate principal amount issued to board member to which Series A preferred stock was sold					$ 250,000							$ 200,000
Beneficial conversion feature					$ 502,057
Short-term debt
Amortization of debt discount																							141,890
Long-term debt
Amortization of debt discount																							141,890
Convertible note purchase agreement | IPO
Debt, Convertible Promissory Notes and Common Stock Warrants
Strike price (in dollars per share) | $ / shares															$ 5.60
Number of shares issued for notes converted | shares					116,070
Exercise price as a percentage of initial public offering price					80.00%				5.60%
Convertible note purchase agreement | Interest Expense.
Debt, Convertible Promissory Notes and Common Stock Warrants
Amortization of debt discount																								6,250
Beneficial conversion feature																							484,326
Short-term debt
Amortization of debt discount																								6,250
Long-term debt
Amortization of debt discount																								$ 6,250
Line of credit and loan agreement
Debt, Convertible Promissory Notes and Common Stock Warrants
Exercise price (in dollars per share) | $ / shares																$ 5.60			$ 6.40
Strike price (in dollars per share) | $ / shares																			$ 8.00
Term																			2 years
Volatility (as a percent)																			52.00%
Dividend yield (as a percent)																			0.00%
Risk-free interest rate (as a percent)																			0.52%
Number of warrants issued to purchase shares of common stock (in shares) | shares																			33,333
Exercise price as a percentage of initial public offering price																			80.00%
Drawdown amount																$ 0
Line of credit and loan agreement | Maximum
Debt, Convertible Promissory Notes and Common Stock Warrants
Stand-by line of credit																			$ 1,000,000
Loan and security agreement
Debt, Convertible Promissory Notes and Common Stock Warrants
Unamortized note discount													$ 134,433										106,635
Amortization of debt discount																							27,798
Stand-by line of credit													8,000,000
Initial loan commitment													6,000,000
Proceeds required to be maintained in cash													$ 4,500,000
Additional borrowing capacity contingent on achievement of milestones			$ 2,000,000
Term of agreement													3 years
Effective interest rate													15.00%
Prior notification period required for pre-payment of principal and accrued interest (in days)													5 days
Short-term debt
Unamortized note discount													$ (134,433)										(106,635)
Nominal interest																							224,400
Amortization of debt discount																							27,798
Deferred financing costs																							43,789
Total																							411,784
Future principal payments of debt
Total																							5,802,927
Long-term debt
Debt and unpaid accrued end-of-term payment																							6,115,797
Unamortized note discount													$ (134,433)										(106,635)
Unamortized debt issuance costs																							(206,234)
Total																							5,802,927
Current portion of long-term debt																							1,707,899
Long-term debt, net of discount																							4,095,028
Nominal interest																							224,400
Amortization of debt discount																							27,798
End-of-term payment																							560,000
Accretion of end-of-term payment																							115,797
Deferred financing costs																							43,789
Total																							411,784
Loan and security agreement | Forecast
Debt, Convertible Promissory Notes and Common Stock Warrants
Balloon amount payable on August 1, 2018	$ 560,000
Loan and security agreement | Forecast | Subsequent event
Debt, Convertible Promissory Notes and Common Stock Warrants
Interest rate (as a percent)																									9.90%
Loan and security agreement | Prepayment during the first twelve months member
Debt, Convertible Promissory Notes and Common Stock Warrants
Prepayment charge during first twelve months of loan when a minimum cash balance is required as a percent of minimum cash balance													2.00%
Prepayment charge during first twelve months of loan when a minimum cash balance is required as a percent of difference between amount being prepaid and minimum cash balance													3.00%
Prepayment charge during first twelve months of loan when no minimum cash balance is required as a percent of amount being prepaid													3.00%
Loan and security agreement | Prepayment after the first twelve months member
Debt, Convertible Promissory Notes and Common Stock Warrants
Prepayment charge as a percent of amount being prepaid													1.00%
Convertible promissory note issued to Serious Change II LP
Debt, Convertible Promissory Notes and Common Stock Warrants
Gross aggregate proceeds																	$ 150,000
Interest rate (as a percent)																	12.00%
Convertible promissory note issued to Serious Change II LP | Accrued liabilities
Short-term debt
Interest payable on convertible notes payable																							$ 15,879