XML 12 R39.htm IDEA: XBRL DOCUMENT

Activity of OTTI on Investment Securities Due to Credit Losses Recognized in Earnings (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Line Items]
Cumulative credit losses on investment securities	$ 531
Additions for credit losses not previously recognized	0
Cumulative credit losses on investment securities	$ 531

The cumulative amount of credit losses recognized in earnings related to debt securities held for which a portion of an other than temporary impairment (OTTI) was recognized in other comprehensive income (a component of shareholders' equity).

+ References+ Details