Consolidation Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net income (loss)	$ 18,274	$ (17,968)	$ 36,655	$ 3,999
Unrealized holding gains arising during the period	23,803	9,564	41,777	28,521
Non-credit portion of other-than-temporary impairments recognized in other comprehensive income	1,320	(53)	1,633	336
Amortization of net unrealized gains on held-to-maturity securiites	537	(432)	(422)	(2,013)
Less: reclassification adjustment for gains included in net income	(81)	1,239	(3,056)	(3,891)
Total unrealized gains on investment securities	25,579	10,318	39,932	22,953
Amortization of net actuarial loss included in net income	904	678	2,712	2,114
Amortization of prior service cost included in net income	24	24	73	73
Total defined benefit pension plans	928	702	2,785	2,187
Other comprehensive income	26,507	11,020	42,717	25,140
Comprehensive income (loss)	$ 44,781	$ (6,948)	$ 79,372	$ 29,139