Reductions in Force (Details) (Employee Separation Costs [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Employee Separation Costs [Member]
Summary of reduction in force initiatives
Accrual, Beginning balance		$ 0	$ 1,607
Charges	2,100	3,889	8,083
Cash Payments		(3,973)	(10,061)
Non-cash Amounts		84	371
Accrual, Ending balance	$ 0	$ 0	$ 0