Employee Benefit Plans (Details Textual) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2017 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Compensation and Retirement Disclosure [Abstract] | ||||
| Maximum compensation percentage | 90.00% | |||
| Age requirement for 401 K contributions | 21 years | |||
| Employer matching contribution, percent of employees' gross pay | 4.50% | |||
| Employers matching contribution, immediate vesting percentage | 100.00% | |||
| Defined contribution plan, cost recognized | $ 171,000 | $ 134,000 | $ 115,000 | |
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- Definition Represents age requirement for 401K contributions. No definition available.
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- References No definition available.
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- Definition Commitment made to pay deferred cash remuneration expressed as a percentage of the individual's base salary. No definition available.
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- Definition The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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- Definition Percentage of employer's matching contributions to a defined contribution plan that vests in a given year. No definition available.
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