Condensed Consolidated Statements of Shareholder's Equity (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Balance at Dec. 31, 2011	$ 1,408,799	$ 5,080	$ 236,076	$ (25,538)	$ 1,193,181
Increase (Decrease) in Shareholder's Equity
Capital contributions from parent and other	9,440		9,440
Change in net unrealized gains (losses):
Investment securities	5,427			5,427
Cash flow hedges	(2,766)			(2,766)
Retirement plan liabilities adjustments	13,609			13,609
Foreign currency translation adjustments	3,392			3,392
Net loss	(47,964)				(47,964)
Balance at Mar. 31, 2012	1,389,937	5,080	245,516	(5,876)	1,145,217
Balance at Dec. 31, 2012	1,263,193	5,080	256,012	29,606	972,495
Increase (Decrease) in Shareholder's Equity
Capital contributions from parent and other	10,507		10,507
Change in net unrealized gains (losses):
Investment securities	(57)			(57)
Cash flow hedges	(104)			(104)
Foreign currency translation adjustments	2,114			2,114
Net loss	(7,415)				(7,415)
Balance at Mar. 31, 2013	$ 1,268,238	$ 5,080	$ 266,519	$ 31,559	$ 965,080