XML 45 R133.htm IDEA: XBRL DOCUMENT v2.4.0.8
Other Comprehensive Income - Summary of Change in Accumulated Other Comprehensive Income (Loss) (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Equity [Abstract]      
Unrealized gains (losses) on securities available for sale, Beginning Balance $ 16,039 $ 12,478 $ (1,963)
Unrealized gains (losses) on securities available for sale, Increase (Decrease) (23,675) 3,561 14,441
Unrealized gains (losses) on securities available for sale, Ending Balance (7,636) 16,039 12,478
Unrealized gain (loss) on postretirement benefits plan, Beginning Balance (981) (632) (147)
Unrealized gain (loss) on postretirement benefits plan, Increase (Decrease) (103) (349) (485)
Unrealized gain (loss) on postretirement benefits plan, Ending Balance (1,084) (981) (632)
Unrealized gain (loss) on interest rate swap, Beginning Balance (1,134) (1,085) (563)
Unrealized gain (loss) on interest rate swap, Increase (Decrease) 409 (49) (522)
Unrealized gain (loss) on interest rate swap, Ending Balance (725) (1,134) (1,085)
Total, Beginning Balance 13,924 10,761 (2,673)
Total, Increase (Decrease) (23,369) 3,163 13,434
Total, Ending Balance $ (9,445) $ 13,924 $ 10,761