Acquisitions and Divestitures Acquisitions and Divestitures (Divestitures Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal					$ 0	$ 6,822	$ 0
Disposal Group, Not Discontinued Operation, Gain (Loss), on Disposal, Net of Tax	$ 0	$ 0	$ 0	$ 5,491		$ 5,500