Other Assets - Other Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Other Assets Non Current [Line Items]
Capitalized software, net of amortization	$ 2,049	$ 3,678
Deferred loan costs, net of amortization	487	608
Other non-current assets	646	348
Total other assets	28,671	30,349
Rabbi Trust
Other Assets Non Current [Line Items]
Assets held in Rabbi Trust	$ 25,489	$ 25,715