Income Taxes - Schedule of Income Tax Amounts were Recorded in Shareholder's Equity as Elements of Other Comprehensive Income (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
|
Income Tax Disclosure [Abstract] | |||
Securities and defined benefit pension plan unrecognized items | $ (3,538) | $ (3,707) | $ (3,192) |