XML 16 R23.htm IDEA: XBRL DOCUMENT

Summary of Significant Policies (Details 10) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Accumulated other comprehensive income related to changes in the fair value of marketable securities
Balance as of beginning of the period	$ 38,128		$ 32,330
Realized gain on sale of marketable securities, net of income taxes, reclassified to earnings	(5,512)	(3,700)	(19,324)	(3,700)
Changes in the value of marketable securities, net of income taxes	(4,285)	(19,742)	15,325	(20,778)
Balance as of ending of the period	$ 28,331		$ 28,331

Appreciation or loss in value (before reclassification adjustment) of the total of unsold securities during the period being reported on, net of tax. Reclassification adjustments include: (1) the unrealized holding gain or loss, net of tax, at the date of the transfer for a debt security from the held-to-maturity category transferred into the available-for-sale category. Also includes the unrealized gain or loss at the date of transfer for a debt security from the available-for-sale category transferred into the held-to-maturity category; (2) the unrealized gains or losses realized upon the sale of securities, after tax; and (3) the unrealized gains or losses realized upon the write-down of securities, after tax.

+ References+ Details