v3.8.0.1

Defined Contribution Plan (Details Textual) - USD ($) | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items] |  |
Description of Defined Contribution Pension and Other Postretirement Plans | Participants may contribute up to 100% of their total compensation to the Plan, not to exceed the limit as defined in the Code. |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 50.00% |
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 6.00% |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 97,000 | $ 105,000

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of discretionary contributions made by an employer to a defined contribution plan. + References No definition available. + Details
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
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- Definition Maximum percentage of employee gross pay the employee may contribute to a defined contribution plan. + References No definition available. + Details
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- Definition Description of defined contribution pension and other postretirement plans. Includes, but is not limited to, plan utilized, employee group covered, and employer matching contributions. + References No definition available. + Details
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