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Salary Deferral Plan | 12 Months Ended
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Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract] |
Salary Deferral Plan | 13. Salary Deferral Plan The Company maintains a salary deferral plan (the “Plan”) in accordance with Internal Revenue Code Section 401(k), as amended. The Plan provides for matching contributions, of which $465,000 and $577,000 were made in 2016 and 2015, respectively.

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