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Note 3 - Valuation and Qualifying Accounts
12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
3
. VALUATION
AND QUALIFYING ACCOUNTS
 
Allowance for uncollectible accounts
 
We maintain allowances for bad debts based on factors such as the composition of accounts receivable, the age of the accounts, historical bad debt experience, and our evaluation of the financial condition and past collection history of each customer.
Write-offs have historically
not
been material, but are evaluated for write off as they are deemed uncollectible based on a periodic review of accounts. Our allowance for doubtful accounts was approximately
$22,600
and
$2,400
at
December 31, 2017
and
2016,
respectively.
 
Sales returns and defective merchandise
 
Product returns are generally recorded directly against sales as those returns occur. Historically, the amount of returns is immaterial and as a result,
no
reserve is recorded in the financial statements.
 
Slow-moving and obsolete inventory
 
The majority of inventory items maintained by us have
no
restrictive shelf life. We review all inventory items annually to determine what items should be eliminated from the product line. Items are selected for several reasons: (
1
) the item is slow-moving; (
2
) the supplier is unable to provide an acceptable quality or quantity; or (
3
) to maintain a freshness in the product line
. Reductions in inventory for slow-moving and obsolete inventory are recorded directly against inventory.