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Stockholders' Equity (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 12, 2021
Mar. 09, 2021
Feb. 11, 2021
Apr. 02, 2020
Nov. 25, 2020
Nov. 23, 2020
Oct. 28, 2019
Mar. 31, 2021
Mar. 31, 2020
Sep. 30, 2020
Dec. 31, 2020
Feb. 11, 2020
Jan. 17, 2018
Jan. 16, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common stock, shares authorized               50,000,000     50,000,000   50,000,000 200,000,000
Common stock, shares issued               38,266,482     25,085,534      
Common stock, shares outstanding               38,266,482     25,085,534      
Preferred stock, shares authorized               10,000,000     10,000,000      
Preferred stock, shares issued               0     0      
Preferred stock, shares outstanding               0     0      
Proceeds from issuance of common stock, net of issuance costs               $ 5,477,432          
Proceeds from issuance of warrant               $ 255,751          
Stock options, granted               335,000            
Stock options, outstanding               1,999,502            
Share-based compensation, tax benefit from compensation expense               $ 1,300,000            
Share-based compensation arrangement by share-based payment award, equity instruments other than options, non-vested, outstanding               8,118            
Restricted Stock Units [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based compensation arrangement by share-based payment award, equity instruments other than options, vested in period               280,000            
Share-based compensation arrangement by share-based payment award, equity instruments other than options, non-vested, outstanding               288,118            
2015 Plan [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based compensation arrangement by share-based payment award, number of shares authorized               2,710            
Share-based compensation arrangement by share-based payment award, description               the number of shares that have been authorized for issuance under the 2015 Plan will be automatically increased on the first day of each fiscal year beginning on January 1, 2016 and ending on (and including) January 1, 2025, in an amount equal to the lesser of (1) 4% of the outstanding shares of common stock on the last day of the immediately preceding fiscal year, or (2) another lesser amount determined by the Company’s Board of Directors.            
Share-based compensation arrangement by share-based payment award, number of shares available for grant               674,466            
Share-based compensation arrangement by share-based payment award, common stock percentage               4.00%            
2015 Plan [Member] | Board of Directors [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Share-based compensation arrangement by share-based payment award, number of shares available for grant               1,003,421            
2020 Stock Options Plan [Member] | ExecutiveOfficers And Non-Employee Directors [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common shares available for future issuance amount                   $ 1,300,000        
Stock options, granted                   1,300,000        
2016 Stock Option Plan [Member] | Replacement Awards [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Weighted average grant date fair value of options awarded               $ 1.68            
Number of share options granted               134,371            
Curetis GmbH [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Acquisition of shares       2,028,208                    
Healthcare-focused U.S. Institutional Investor [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues     2,784,184                      
Proceeds from issuance of common stock, net of issuance costs     $ 23,400,000                      
Gross proceeds from sale of common stock     $ 25,000,000                      
Shares issued, price per share     $ 3.00                      
Class of warrant or right, exercise price of warrants or rights     $ 0.01                      
Warrants exercisable period     6 months                      
Warrants expiry period     5 years 6 months                      
Common Stock [Member] | H.C. Wainwright & Co., LLC [Member] | 2020 ATM Offering [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues                     7,521,610      
Proceeds from issuance of common stock, net of issuance costs                     $ 15,800,000      
Gross proceeds from sale of common stock                     16,700,000      
Remaining availability under market offering               $ 5,400,000            
Common Stock [Member] | H.C. Wainwright & Co., LLC [Member] | 2020 ATM Offering [Member] | Maximum [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Common shares available for future issuance amount                       $ 22,100,000    
Pre Funded Warrant [Member] | Healthcare-focused U.S. Institutional Investor [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues     5,549,149                      
Shares issued, price per share     $ 2.99                      
Class of warrant or right, exercise price of warrants or rights     $ 3.55                      
Warrants exercised     4,166,666                      
Warrants [Member] | Holder pursuant to company issued to Holder securities [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Proceeds from issuance of warrant           $ 9,650,000                
Warrants exercisable period   5 years                        
Non-cash warrant expense           $ 7,800,000                
New Warrants [Member] | Holder pursuant to company issued to Holder securities [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Purchase of new warrants $ 255,751                          
Shares issued, price per share   $ 0.65                        
Class of warrant or right, exercise price of warrants or rights   $ 3.56                        
Issuance of common stock warrants to purchase   3,147,700                        
October 2019 Public Offering [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues             2,590,170              
Shares issued, price per share             $ 2.00              
Class of warrant or right, exercise price of warrants or rights             $ 2.00              
Warrants exercisable period             5 years              
October 2019 Public Offering [Member] | Common Warrants [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Proceeds from issuance of common stock, net of issuance costs               $ 10,000     $ 8,700,000      
Warrants exercised               5,000     4,341,000      
October 2019 Public Offering [Member] | Pre-funded Units [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues             2,109,830              
Shares issued, price per share             $ 1.99              
Gross proceeds from sale of common stock and warrants             $ 9,400,000              
Net proceeds from sale of common stock and warrants             $ 8,300,000              
Class of warrant or right, exercise price of warrants or rights             $ 0.01              
October 2019 Public Offering [Member] | Pre Funded Warrant [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Warrants exercised             2,109,830              
2020 PIPE [Member] | Healthcare-focused U.S. Institutional Investor [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues         2,245,400                  
Proceeds from issuance of common stock, net of issuance costs         $ 9,300,000                  
Gross proceeds from sale of common stock         $ 10,000,000                  
Shares issued, price per share         $ 2.065                  
Class of warrant or right, exercise price of warrants or rights         $ 1.94                  
Warrants exercisable period         6 months                  
Warrants exercised         4,842,615                  
Issuance of common stock warrants to purchase         2,245,400                  
Warrants expiry period         5 years 6 months                  
2020 PIPE [Member] | Pre Funded Warrant [Member] | Healthcare-focused U.S. Institutional Investor [Member]                            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                            
Stock issued during period, shares, new issues         2,597,215           2,597,215      
Shares issued, price per share         $ 2.055                  
Warrants exercised         2,597,215                  
Issuance of common stock warrants to purchase         2,597,215