Shareholders' Equity - Treasury Stock (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended	11 Months Ended
	Mar. 31, 2013	Mar. 31, 2013	May 02, 2012
Equity [Abstract]
Number of shares authorized to be repurchased			5,000,000
Stock Repurchased During Period, Shares		1,200,000
Payments for Repurchase of Common Stock		$ 6.5
Remaining number of shares authorized to be repurchased	3,800,000	3,800,000
Average price per share of treasury stock acquired and held	$ 24.15
Movement in Treasury Stock [Roll Forward]
Balance as of December 31, 2012 (shares)	1,563,321
Purchases (shares)	0
Exercise of stock options (shares)	0
Restricted stock grants and other (shares)	51,718
401(k) matching contribution (shares)	(200,080)
Balance as of March 31, 2013 (shares)	1,414,959	1,414,959