Revenue Recognition (Details) - Company`s receivables and contract liabilities with customers - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition (Details) - Company`s receivables and contract liabilities with customers [Line Items]
Gross receivables	$ 3,124,000	$ 4,067,000
Allowance for bad debts	743,000	1,796,000
Net receivables	2,381,000	2,271,000
Contract liabilities	$ 230,000	$ 465,000

No definition available.

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- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

+ References

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Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business.

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Amount of allowance for credit loss on accounts receivable.

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- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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