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Stock-Based Compensation Plan (Details) - Independent directors compensation plan [Member] - $ / shares	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Number of Shares
Beginning Balance, Outstanding	4,000	4,000
Beginning Balance, Exercisable	4,000	4,000
Granted	5,000
Exercised
Forfeited
Ending Balance, Outstanding	9,000	4,000
Ending Balance, Exercisable	9,000	4,000
Average Exercise Price per Share
Beginning Balance, Outstanding	$ 10.2	$ 10.2
Beginning Balance, Exercisable	10.2	10.2
Granted	1.6
Exercised
Forfeited
Ending Balance, Outstanding	5.4	10.2
Ending Balance, Exercisable	$ 5.4	$ 10.2
Weighted Average Remaining Contractual Term in Years
Outstanding	3 years 9 months 7 days	4 years 9 months 7 days
Exercisable	3 years 9 months 7 days	4 years 9 months 7 days
Granted	10 years	0 years
Exercised	0 years	0 years
Forfeited	0 years	0 years
Outstanding	6 years 4 months 28 days	3 years 9 months 7 days
Exercisable	6 years 4 months 28 days	3 years 9 months 7 days

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