Employee Benefit Plans	12 Months Ended
Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	8. Employee Benefit Plans The Company has a 401(k) Savings Retirement Plan that covers substantially all full-time employees who meet the plan’s eligibility requirements and provides for an employee elective contribution. The Plan provides for employer matching contributions. Employer contributions are discretionary and determined annually by the Board of Directors. For the years ended December 31, 2016, 2015 and 2014, employer contributions to the Plan totaled $147,000, $137,000 and $127,000, respectively. At December 31, 2016, included in accrued expenses is an unpaid amount of $77,000 for prior years employer contributions. The Company is required to contribute to a government-sponsored pension plan for the employees of its Switzerland-based subsidiary. For the years ended December 31, 2016, 2015 and 2014, the employer’s portion of the amounts contributed to the subsidiary’s pension plan on behalf of those employees was $132,000, $134,000 and $101,000, respectively.

Employee Benefit Plans

12 Months Ended

Dec. 31, 2016

Compensation and Retirement Disclosure [Abstract]

8. Employee Benefit Plans

The Company has a 401(k) Savings Retirement Plan that covers substantially all full-time employees who meet the plan’s eligibility requirements and provides for an employee elective contribution. The Plan provides for employer matching contributions. Employer contributions are discretionary and determined annually by the Board of Directors. For the years ended December 31, 2016, 2015 and 2014, employer contributions to the Plan totaled $147,000, $137,000 and $127,000, respectively. At December 31, 2016, included in accrued expenses is an unpaid amount of $77,000 for prior years employer contributions.

The Company is required to contribute to a government-sponsored pension plan for the employees of its Switzerland-based subsidiary. For the years ended December 31, 2016, 2015 and 2014, the employer’s portion of the amounts contributed to the subsidiary’s pension plan on behalf of those employees was $132,000, $134,000 and $101,000, respectively.