CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands	Common stock [Member]	Paid-in capital [Member]	Treasury stock [Member]	Accumulated other comprehensive income (loss) [Member]	Retained earnings (deficit) [Member]	Total
Balance at Dec. 31, 2010	$ 205,047	$ 1,138,942	$ (222,632)	$ 22,136	$ 525,562
Net loss	0	0	0	0	(485,892)	(485,892)
Change in unrealized investment gains and losses, net (note 6)	0	0	0	21,057	0	21,057
Reissuance of treasury stock, net (note 15)	0	(14,577)	60,090	0	(51,305)
Equity compensation (note 18)	0	11,456	0	0	0
Benefit plans adjustment (note 13)	0	0	0	(12,862)	0	12,862
Unrealized foreign currency translation adjustment, net	0	0	0	(207)	0	(207)
Balance at Dec. 31, 2011	205,047	1,135,821	(162,542)	30,124	(11,635)
Net loss	0	0	0	0	(927,079)	(927,079)
Change in unrealized investment gains and losses, net (note 6)	0	0	0	(78,659)	0	(78,659)
Reissuance of treasury stock, net (note 15)	0	(8,749)	57,583	0	(51,567)
Equity compensation (note 18)	0	8,224	0	0	0
Benefit plans adjustment (note 13)	0	0	0	(1,221)	0	1,221
Unrealized foreign currency translation adjustment, net	0	0	0	1,593	0	1,593
Balance at Dec. 31, 2012	205,047	1,135,296	(104,959)	(48,163)	(990,281)	196,940
Net loss	0	0	0	0	(49,848)	(49,848)
Change in unrealized investment gains and losses, net (note 6)	0	0	0	(123,591)	0	(123,591)
Common stock shares issued (note 15)	135,000	528,335	0	0	0
Reissuance of treasury stock, net (note 15)	0	(7,892)	40,524	0	(34,488)
Equity compensation (note 18)	0	5,530	0	0	0
Benefit plans adjustment (note 13)	0	0	0	68,038	0	(68,038)
Unrealized foreign currency translation adjustment, net	0	0	0	(14,010)	0	(14,010)
Balance at Dec. 31, 2013	$ 340,047	$ 1,661,269	$ (64,435)	$ (117,726)	$ (1,074,617)	$ 744,538