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Accumulated Other Comprehensive Loss - Summary of Other Comprehensive Income and Tax Impact (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Other Comprehensive Income Loss Net Of Tax Period Increase Decrease [Abstract]      
Net unrealized (loss) gain on available-for-sale securities, net of income tax (benefit) expense of ($97), $120 and $276 $ (142) $ 181 $ 638
Net unrealized gain (loss) on interest rate swaps, net of income tax expense (benefit) of $135, ($54) and ($242) 230 (93) (412)
Foreign currency translation (60) (62) (65)
Total other comprehensive income $ 28 $ 26 $ 161