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Other Employee Benefit Plans
12 Months Ended
Dec. 31, 2017
Retirement Benefits [Abstract]  
Other Employee Benefit Plans
Other Employee Benefit Plans

Retirement Savings Plan

Since October 1, 1999, the Company has had a retirement savings plan for eligible employees (the “RSP”) under Section 401(k) of the Internal Revenue Code. The RSP allows eligible employees to contribute up to 15% of their eligible compensation on a pre-tax basis. There is no match by the Company.