Accrued Restructuring Restructuring Reserve Rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2012	$ 1,188
Additions	6,542
Reversals	(477)
Expenditures	(4,506)
Balance accrued as of December 31, 2013	2,747
Other Noncurrent Liabilities [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2013	600
Severance, Payroll Taxes and Other Employee Benefits [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2012	198
Additions	5,599
Reversals	(136)
Expenditures	(3,875)
Balance accrued as of December 31, 2013	1,786
Lease Abandonment Charges [Member]
Restructuring Reserve [Roll Forward]
Balance accrued as of December 31, 2012	990
Additions	943
Reversals	(341)
Expenditures	(631)
Balance accrued as of December 31, 2013	$ 961