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Note 5 - Revenue Recognition
9 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Revenue from Contract with Customer [Text Block]
5.
    REVENUE RECOGNITION
 
The Company disaggregates it's net sales by geographical location as it believes it best depicts how the nature, timing and uncertainty of net sales and cash flows are affected by economic factors. The following table summarizes net sales by geographical location:
 
   
Three Months Ended
   
Nine Months Ended
 
   
March 31
   
March 31
 
   
2020
   
2019
   
2020
   
2019
 
United States
  $
4,200,797
    $
3,611,654
    $
11,785,603
    $
10,653,071
 
Export
   
588,644
     
1,248,593
     
2,577,259
     
5,403,242
 
Net Sales
  $
4,789,441
    $
4,860,247
    $
14,362,862
    $
16,056,313
 
 
 
Deferred revenue relates primarily to consumer and customer warranties. These constitute future performance obligations and the Company defers revenue related to these future performance obligations. The Company recognized revenue, which was included in the deferred revenue liability at the beginning of the periods, of
$367,198
 and 
$424,574
 
in the
nine
months ended
March 31, 2020
and
2019
, respectively, for performance obligations related to consumer and customer warranties.  The deferred revenue liability was 
$859,370
 and 
$763,252
 as of 
June 30, 2018
 and 
March 31, 2019
, respectively.
 The Company estimates that the deferred revenue performance obligations are satisfied within
one
to
three
years and therefore uses that same time frame for recognition of the deferred revenue.