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Stock-Based Compensation Plan (Details) - Independent directors compensation plan [Member] - $ / shares	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Number of Shares
Outstanding, Beginning balance	9,000	9,000
Exercisable, Beginning balance	9,000	9,000
Granted
Exercised
Forfeited
Outstanding, Ending balance	9,000	9,000
Exercisable, Ending balance	9,000	9,000
Average Exercise Price per Share
Outstanding, Beginning balance	$ 5.4	$ 5.4
Exercisable, Beginning balance	5.4	5.4
Granted
Exercised
Forfeited
Outstanding, Ending balance	5.4	5.4
Exercisable, Ending balance	$ 5.4	$ 5.4
Weighted Average Remaining Contractual Term in Years
Outstanding, Beginning balance	5 years 4 months 28 days
Exercisable, Beginning balance	5 years 4 months 28 days
Granted	0 years
Exercised	0 years
Forfeited	0 years
Outstanding, Ending balance	4 years 10 months 28 days
Exercisable, Ending balance	4 years 10 months 28 days

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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