Employee Benefits (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Maximum contribution percentage of compensation	100.00%
Employer match percentage	50.00%
Percentage of employee deferral eligible for employer matching contribution	6.00%
Contributions to employee benefits plan	$ 0.8	$ 0.5	$ 0.4
Contributions and other expenses related to foreign subsidiary	$ 0.5	$ 0.4	$ 0.2