Other Liabilities - Components of Other Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Deferred compensation	$ 7,213	$ 7,357
Pension liability	15,036	14,634
Joint beneficiary agreements	2,749	2,623
Miscellaneous other liabilities	3,137	7,097
Total other liabilities	$ 28,135	$ 31,711