Goodwill and Other Intangible Assets - Activity in Goodwill and Other Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, beginning balance	$ 48,900
Disposition of HIM	(4,886)
Goodwill, ending balance	44,014
Other intangible assets net, beginning balance	4,993
Amortization of intangible assets	(476)
Other intangible assets net, ending balance	$ 4,517