Restructurings (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Mar. 31, 2013
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 1,445	$ 776
Payment made	(1,720)	(1,842)
adjustments	(132)	(23)
Restructuring Accruals	596	2,534
Ending Balance	189	1,445
First -Quarter 2013 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	922	0
Payment made	(757)	(1,583)
adjustments	(103)	0
Restructuring Accruals	0	2,505
Ending Balance	62	922
Fourth-quarter 2011 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	2	6
Payment made	(2)	(4)
adjustments	0	0
Restructuring Accruals	0	0
Ending Balance	0	2
Third-quarter 2011 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	521	769
Payment made	(460)	(254)
adjustments	(29)	(23)
Restructuring Accruals	0	29
Ending Balance	32	521
Second-quarter 2011 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0	1
Payment made	0	(1)
adjustments	0	0
Restructuring Accruals	0	0
Ending Balance	0	0
Second-Quarter 2013 [Member]
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0	0
Payment made	(501)	0
adjustments	0	0
Restructuring Accruals	596	0
Ending Balance	$ 95	$ 0