Subsequent Events (Details) (Subsequent Event [Member], Restructuring Plan [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	Jan. 23, 2015 employee
Subsequent Event [Line Items]
Number of positions expected to be eliminated	40
Number of positions expected to be eliminated (percent)	7.00%
Minimum [Member]
Subsequent Event [Line Items]
Expected cost of restructuring plan	1.5
Reduction in operating expenses	14.0
Maximum [Member]
Subsequent Event [Line Items]
Expected cost of restructuring plan	1.7
Reduction in operating expenses	18.0