SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK	12 Months Ended
Dec. 31, 2019
SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK [Abstract]
SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK	9. SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK Royalty revenue from Econolite comprised 56% and 61% of revenue in the years ended December 31, 2019 and 2018, respectively. Accounts receivable from Econolite were $1.9 million and $1.6 million at December 31, 2019 and 2018, respectively. Major disruptions in the manufacturing and distribution of our products by Econolite or the inability of Econolite to make payments on its accounts receivable with us could have a material adverse effect on our business, financial condition and results of operations. At December 31, 2019, Econolite comprised 59% of our accounts receivable compared to 42% at December 31, 2018. Product revenue from four of the Company's major customers other than Econolite comprised 16% and 17% of revenue in the years ended December 31, 2019 and 2018, respectively. Accounts receivable from these customers were $567,000 and $797,000 at December 31, 2019 and 2018, respectively. Major disruptions in the distribution of our products by these customers or the inability to make payments on their accounts receivable with us could have a material adverse effect on our business, financial condition and results of operations. At December 31, 2019, they comprised more than 18% of accounts receivable.

SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK

12 Months Ended

Dec. 31, 2019

SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK [Abstract]

SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK

9. SIGNIFICANT CUSTOMERS AND CONCENTRATION OF CREDIT RISK

Royalty revenue from Econolite comprised 56% and 61% of revenue in the years ended December 31, 2019 and 2018, respectively. Accounts receivable from Econolite were $1.9 million and $1.6 million at December 31, 2019 and 2018, respectively. Major disruptions in the manufacturing and distribution of our products by Econolite or the inability of Econolite to make payments on its accounts receivable with us could have a material adverse effect on our business, financial condition and results of operations. At December 31, 2019, Econolite comprised 59% of our accounts receivable compared to 42% at December 31, 2018.

Product revenue from four of the Company's major customers other than Econolite comprised 16% and 17% of revenue in the years ended December 31, 2019 and 2018, respectively. Accounts receivable from these customers were $567,000 and $797,000 at December 31, 2019 and 2018, respectively. Major disruptions in the distribution of our products by these customers or the inability to make payments on their accounts receivable with us could have a material adverse effect on our business, financial condition and results of operations. At December 31, 2019, they comprised more than 18% of accounts receivable.