Exit Activities and Reductions in Force (Details) (Employee Separation Costs [Member], USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Employee Separation Costs [Member]
Summary of exit activities and reduction in force initiatives
Accrual, Beginning balance	$ 0	$ 1,607
Charges	3,889	5,988
Cash Payments	(3,973)	(7,609)
Non-cash Amounts	84	14
Accrual, Ending balance	$ 0	$ 0