Consolidated Statements of Comprehensive Income (Parentheticals) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Tax effect on unrealized gains on available-for-sale securities	$ (96)	$ 1,352	$ 1,028	$ 1,196
Tax effect on reclassification of (gains) losses on available-for-sale securities recognized during the period	(283)	(22,494)	53	(12,788)
Tax effect on unrealized gains on effective foreign currency forward exchange contracts	10	0	10	0
Tax effect on reclassification on reclassification of (gains) losses on effective foreign currency forward exchange contracts recognized during the period	$ (40)	$ 0	$ 10	$ 0