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Note 13. Employee Benefit Plan | 12 Months Ended
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Dec. 31, 2017
Retirement Benefits [Abstract] |
13. Employee Benefit Plan | The Company sponsors a defined contribution 401(k) Profit Sharing Plan and allows all employees in the United States to participate. Matching and profit sharing contributions to the plan are at the discretion of management, but are limited to the amount deductible for federal income tax purposes. The Company made contributions to the plan of $20,000 and $21,000 during the years ended December 31, 2017 and 2016, respectively. The Company also sponsors a defined contribution plan which covers substantially all employees in the United Kingdom. Employer contributions to the plan are at the discretion of management. The Company's contribution expense for discretionary contributions were $5,000 and $4,000 for the year ended December 31, 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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 712 -URI http://asc.fasb.org/topic&trid=2197446 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 710 -URI http://asc.fasb.org/topic&trid=2127225 + Details
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