Employee Benefit Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Defined Contribution Pension Plan [Line Items]
Contributions made to 401(k)	$ 2.4	$ 2.3	$ 2.3
First Tier of Deferral
Defined Contribution Pension Plan [Line Items]
Percent of gross pay	100.00%
Percent of eligible deferral	4.00%
Second Tier of Deferral
Defined Contribution Pension Plan [Line Items]
Percent of gross pay	50.00%
Percent of eligible deferral	2.00%