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Commitments and Contingent Liabilities (Details Narrative) - George Mason Sponsorship [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($)
Termination Option One [Member]
Increase (Decrease) in Contractual Obligation, Termination Option	$ (3,500)
Termination Option One [Member] | Maximum [Member]
Contractual Obligation, Option Period	15 years
Termination Option One [Member] | Minimum [Member]
Contractual Obligation, Option Period	11 years
Termination Option Two [Member]
Increase (Decrease) in Contractual Obligation, Termination Option	$ (3,600)
Termination Option Two [Member] | Maximum [Member]
Contractual Obligation, Option Period	20 years
Termination Option Two [Member] | Minimum [Member]
Contractual Obligation, Option Period	16 years
Effective June 30, 2030 [Member]
Option to Terminate	15 years
Effective June 30, 2025 [Member]
Option to Terminate	10 years

X

- Definition

Represents the option period for a contractual obligation.

+ References

No definition available.

+ Details

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X

- Definition

Amount of increase (decrease) in contractual obligations if the contract is terminated.

+ References

No definition available.

+ Details

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X

- Definition

Amount of time, after which, the company has the option to terminate the agreement.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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