CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Unrealized holding gains (losses) on securities, tax	$ 0	$ 1,958	$ 3,063	$ (2,450)
Unrealized gain on Euro-denominated debt, tax	0	0	0	(4,139)
Net gains (losses) arising during the period, tax	$ 1,682	$ 0	$ 3,333	$ 2,037