Core deposit intangible assets are being amortized over the period of expected benefit, which ranges from 4 to 14 years. In connection with the First Market Bank acquisition, the Company recorded $26.4 million of core deposit intangible and $1.2 million of trademark intangible. The core deposit intangible on that acquisition is being amortized over an average of 4.3 years using an accelerated method and the trademark intangible is being amortized over three years using the straight-line method.

The Harrisonburg branch core deposit intangible of $9,500 was expensed in the second quarter of 2011.

Information concerning intangible assets for years ended December 31, 2012 and 2011 is presented in the following table (dollars in thousands):

Amortization expense of core deposit intangibles for the years ended December 31, 2012, 2011, and 2010 totaled $4.9 million, $6.1 million, and $7.3 million, respectively. Amortization expense of the trademark intangibles for the year ended December 31, 2012 and 2011 both totaled $400,000, and December 31, 2010 was $367,000, respectively. As of December 31, 2012, the estimated remaining amortization expense of core deposit and trademark intangibles for each of the five succeeding fiscal years is as follows for the years ending (dollars in thousands):