Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

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Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
12 Months Ended
Oct. 02, 2019
Apr. 17, 2018
Feb. 21, 2017
Jul. 09, 2015
Dec. 31, 2019
Dec. 31, 2018
Jan. 01, 2019
Jan. 01, 2018
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles         $ 3,912,314 $ 3,912,314    
Intangible Assets And In process Research And Development         218,750 243,750    
Restricted Cash and Cash Equivalents, Noncurrent         45,000 45,000    
Goodwill         1,525,896 1,525,896    
Deferred Tax Liabilities, Net         365,364 269,968    
Money Market Funds Fair Value         $ 1,710,000 $ 1,210,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number         50,187 121,478    
Share Purchase Price Of Common Stock And Warrant $ 3.125              
Contingent Consideration Funds Fair Value         $ 500,000      
Other assets or liabilities that are subject to fair value methodology and estimation         0 $ 0    
Contract with Customer, Liability, Revenue Recognized         2,686,000      
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets               $ 9,500,000
Class Of Warrant Or Right Number Of Warrant Issued 600,000 2,343,777            
Stock Issued During Period, Shares, New Issues 600,000 2,343,777            
Payments to Clinical Trial Services         978,000      
Proceeds from Issuance of Private Placement         $ 1,900,000      
Right of use Assets Beginning Balance             $ 137,000.000  
Maximum [Member]                
Property, Plant and Equipment, Useful Life         5 years      
Minimum [Member]                
Property, Plant and Equipment, Useful Life         2 years      
New Valeant Agreement                
Revenues Recognition Milestone Method Description     Company was eligible to receive milestone payments totaling up to approximately $99.0 million, upon and subject to the achievement of certain specified developmental and commercial progress of the EGP-437 Combination Product for the New Field          
Proceeds From Upfront Payment     $ 4,000,000 $ 1,000,000        
Contract with Customer, Liability, Revenue Recognized     99,000,000 32,500,000        
Revenue Recognition Milestone Payments     $ 3,400,000 $ 5,400,000