XML 42 R29.htm IDEA: XBRL DOCUMENT v3.20.2
Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Nov. 29, 2019
Jan. 31, 2020
Oct. 31, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2016
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Concentration Risk [Line Items]                  
Securities excluded from net loss per share calculation (in shares)       47,000 28,000   4,000 66,000  
Sale of common stock (in shares)             721,546    
Exercise price of common stock (in dollars per share)       $ 3.48     $ 3.48    
Proceeds from issuance of warrants             $ 2,500    
Issuance of warrants, January 2020   $ 1,636   $ 103     15    
Proceeds from the exercise of warrants             51 $ 0  
Amount paid for clearing fees   231              
Offering costs   474              
Proceeds from sale of common stock   $ 2,300              
Percentage of gross proceeds used to make payments on note   10.00%              
Gross proceeds   $ 275              
Payments on the Iliad Note             $ 526 $ 0  
Note Purchase Agreement                  
Concentration Risk [Line Items]                  
Percentage of gross proceeds used to make payments on note 10.00%                
Payments on the Iliad Note   $ 226              
Institutional Investor                  
Concentration Risk [Line Items]                  
Sale of common stock (in shares)   688,360   673,361          
Exercise price of common stock (in dollars per share)       $ 3.37     $ 3.37    
Purchase price (in usd per share)   $ 0.625              
Private Placement                  
Concentration Risk [Line Items]                  
Sale of common stock (in shares)       48,185     48,185    
Exercise price of common stock (in dollars per share)       $ 4.9940     $ 4.9940    
Amount paid for placement agent commissions   $ 193              
Amount paid related to expenses for registered direct offering and concurrent private placement   $ 50              
All Other Products                  
Concentration Risk [Line Items]                  
Warranty service periods     5 years            
LEDFL Tubular LED Lamps (Excluding Red Caps)                  
Concentration Risk [Line Items]                  
Warranty service periods     10 years            
Minimum                  
Concentration Risk [Line Items]                  
Warranty service periods           1 year      
Maximum                  
Concentration Risk [Line Items]                  
Warranty service periods           5 years      
Maximum | Commercial LEDFL Tubular LED Lamps (Excluding Battery Backup TLED), Troffer Luminaires, And Certain Globe Lights                  
Concentration Risk [Line Items]                  
Warranty service periods           10 years      
Customer concentration risk                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       10.00%     10.00%    
Customer concentration risk | Revenue | Distributor To The U.S. Navy                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       40.00% 13.00%   39.00% 17.00%  
Customer concentration risk | Revenue | Distributor for the U.S. Navy and a Regional Commercial Lighting Retrofit Company                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       15.00% 26.00%   15.00% 28.00%  
Customer concentration risk | Revenue | U.S. Navy and Shipbuilders                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       11.00% 20.00%   53.00% 26.00%  
Customer concentration risk | Revenue | Distributor To The U.S. Navy Combined With Sales To Shipbuilders                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       60.00%          
Customer concentration risk | Accounts receivable | Distributor To The U.S. Navy                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)             47.00%   10.00%
Customer concentration risk | Accounts receivable | Distributor for the U.S. Navy and a Regional Commercial Lighting Retrofit Company                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)             19.00%   41.00%
Geographic concentration risk | Revenue | Countries outside of the United States                  
Concentration Risk [Line Items]                  
Concentration risk (less than for one percent)       1.00% 0.00%   1.00% 1.00%