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12. Retirement Plan	12 Months Ended
12. Retirement Plan	Dec. 31, 2017
Notes to Financial Statements
12. Retirement Plan	The Company sponsors a participant contributory retirement (401(k)) plan, which is available to all employees. The Company’s contribution to the plan is either a percentage of the participant’s contribution (50% of the participant’s contribution up to a maximum of 6%) or a discretionary amount. For the years ended December 31, 2017 and 2016, total contributions made by the Company were $136 and $121, respectively.