Accrued Expenses (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018	Dec. 31, 2017
Payables and Accruals [Abstract]
Compensation and related benefits	$ 264,000	$ 479,000	$ 304,000
Accrued Litigation	507,000	269,000	269,000
Personal property and franchise tax
Board Compensation	9,000	23,000	16,000
Other	5,000
Total accrued expenses	$ 785,000	$ 771,000	$ 589,000

It represents the amount of research project agreement.

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Carrying value as of the balance sheet date of obligations, excluding pension and other postretirement benefits, incurred through that date and payable for perquisites provided to employees pertaining to services received from them. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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- Definition

Carrying amount of reserve for known or estimated probable loss from litigation, which may include attorneys' fees and other litigation costs, which is expected to be paid within one year of the date of the statement of financial position.

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Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

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