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Defined-Contribution Savings Plan	12 Months Ended
Defined-Contribution Savings Plan	Dec. 31, 2015
Defined Contribution Pension and Other Postretirement Plans Disclosure [Abstract]
Defined-Contribution Savings Plan	16. Defined-Contribution Savings Plan The Company sponsors an employee retirement plan (the “401(k) Plan”) that provides certain eligible employees of the Company an opportunity to accumulate funds for retirement. The Company provides matching contributions on a discretionary basis. During the years ended December 31, 2015, 2014 and 2013, the Company expensed $1,300,000, $990,000 and $926,000, respectively, for matching contributions to the 401(k) Plan.