Other-Than-Temporary Impairment The following table presents details of the other-than-temporary impairment related to securities, including equity  securities carried at cost. Year ended December 31 (Dollars in thousands) 2011 2010 2009 Other-than-temporary impairment charges (included in earnings): Debt securities: Corporate debt securities $ — 810 — Pooled trust preferred securities 50 2,695 Individual issuer trust preferred securities 338 1,168 1,875 Total debt securities $ 2,028 4,570 Cost-method investments — — 1,980 Total other-than-temporary impairment charges 338 2,028 6,550 Other-than-temporary impairment on debt securities: Recorded as part of gross realized losses: Credit-related 338 1,218 4,570 Securities with intent to sell — 810 — Recorded directly to other comprehensive income for non-credit  related impairment 130 210 257 Total other-than-temporary impairment on debt securities $ 468 2,238 4,827 Realized Gains and Losses The following table presents the gross realized gains and losses on sales and other-than-temporary impairment charges related to securities, including cost-method investments. Year ended December 31 (Dollars in thousands) 2011 2010 2009 Gross realized gains $ 1,698 3,496 2,881 Gross realized losses (482) (45) (34) Other-than-temporary impairment charges (338) (2,028) (6,550) Realized gains (losses), net $ 878 1,423 (3,703) page 50