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Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2018
Defined Contribution Plan [Abstract] |
Compensation and Employee Benefit Plans, Other than Share-based Compensation [Text Block] | 11. Employee Benefit Plan The Company has a defined contribution plan under the Internal Revenue Code Section 401(k). This plan covers substantially all employees who meet minimum age and service requirements and allows participants to defer a portion of their annual compensation on a pre-tax basis. For the years ended December 31, 2018, 2017 and 2016, the Company made a discretionary match of 50% up to the first 3% of employee contributions. All matching contributions have been paid by the Company. The Company’s matching contributions vest in full at the employee’s third anniversary of employment and all employer contributions thereafter vest immediately. The total Company matching contributions were approximately $94,000, $88,000 and $79,000 for the years ended December 31, 2018, 2017 and 2016, respectively.

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- Definition The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, life insurance, severance, health care, unemployment and other benefit plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 + Details
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