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Note 16 - Concentration of Risk | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Concentration Risk Disclosure [Text Block] |
1 6 . | Concentration of Risk
The Company maintains its cash and cash equivalents in various bank accounts, the balances of which at times may exceed federally insured limits. The Company has not experienced any losses related to these accounts, and management does not believe that the Company is exposed to significant credit risk. The Company’s investments in marketable securities are in one publicly traded entity. The Company recognized a gain on investment in common stock warrants in a prior period and during 2019 recognized a realized gain of $61,000 and an unrealized gain of $170,000 in the consolidated statement of comprehensive income. During 2018, the Company recognized realized gain of $7,000 and an unrealized loss of $57,000 in the consolidated statement of comprehensive income. The Company is exposed to the fluctuation in the stock price of this investment. Management believes that adequate provision has been made for risk of loss on all credit transactions. The Company buys a significant amount of its disposable protective apparel products from a limited number of contract manufacturers located in Asia and, to a much lesser extent, a contract manufacturer in Mexico. Management believes that other suppliers could provide similar products at comparable terms. A change in suppliers, however, could cause a delay in shipment and a possible loss of sales, which would affect operating results adversely. The Building Supply segment buys semi-finished housewrap and synthetic roof underlayment from its joint venture, Harmony, located in India. Although there are a limited number of manufacturers of the particular product, management believes that other suppliers could provide similar products at comparable terms. A change in suppliers, however, could cause a delay in shipment and a possible loss of sales, which would affect operating results adversely. The Company provides products to customers located primarily in the United States. Customers accounting for 10% or more of accounts receivable as of December 31, 2019 and 2018, and 10% or more of net sales for the years ended December 31, 2019 and 2018, were as follows:
|  | December 31, |
|  | 2019 |  |  | 2018 |
Accounts Receivable: |  |  |  |  |  |  |  |
Customer A |  |  | 18 | % |  |  | 24 | %
Customer B |  |  | * |  |  |  | 14 | %
Customer C |  |  | 10 | % |  |  | * |
Net sales: |  |  |  |  |  |  |  |
Customer A |  |  | 20 | % |  |  | 20 | %
Customer B |  |  | 12 | % |  |  | 12 | %
* Customer’s balance was below the 10% threshold for accounts receivable and/or net sales as of and for the year ended December 31, 2019 and December 31, 2018.

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- Definition The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -URI http://asc.fasb.org/topic&trid=2134479 + Details
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