Income Taxes (Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Mar. 31, 2011
Reconciliation of Unrecognized Income Tax Benefits
Beginning Balance	$ 5,699	$ 5,985	$ 5,970	$ 6,315
Additions based on income tax positions related to current year	58	57	70	70
Additions for income tax positions of prior years	175	0	0	0
Reductions for income tax positions of prior years	2,431	343	0	415
Settlements	1,250	0	0	0
Net activity	(3,448)	(286)	70	(345)
Ending Balance	$ 2,251	$ 5,699	$ 6,040	$ 5,970