CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (USD $) In Thousands	Common stock [Member]	Paid-in capital [Member]	Treasury stock [Member]	Accumulated other comprehensive income (loss) [Member]	Accumulated deficit [Member]	Total
Balance at Dec. 31, 2012	$ 205,047	$ 1,135,296	$ (104,959)	$ (48,163)	$ (990,281)
Net income (loss)					(49,848)
Change in unrealized investment gains and losses, net (note 7)	0	0	0	(123,591)	0
Common stock issuance (note 14)	135,000	528,335	0	0	0
Reissuance of treasury stock, net	0	(7,892)	40,524	0	(34,488)
Equity compensation	0	5,530	0	0	0
Benefit plan adjustments	0	0	0	68,038	0
Unrealized foreign currency translation adjustment	0	0	0	(14,010)	0
Balance at Dec. 31, 2013	340,047	1,661,269	(64,435)	(117,726)	(1,074,617)	744,538
Net income (loss)					59,982	59,982
Change in unrealized investment gains and losses, net (note 7)	0	0	0	39,598	0	39,598
Reissuance of treasury stock, net	0	(5,712)	30,530	0	(29,791)
Equity compensation	0	1,803	0	0	0
Benefit plan adjustments	0	0	0	(1,486)	0	1,486
Unrealized foreign currency translation adjustment	0	0	0	1,253	0	1,253
Balance at Mar. 31, 2014	$ 340,047	$ 1,657,360	$ (33,905)	$ (78,361)	$ (1,044,426)	$ 840,715