Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 52,440	$ 52,709
Accumulated Amortization	9,507	5,896
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,429	1,423
Accumulated Amortization	1,408	1,383
Employment agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	757	762
Accumulated Amortization	345	221
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	8,897	8,942
Accumulated Amortization	1,769	789
Customer lists [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	41,357	41,582
Accumulated Amortization	$ 5,985	$ 3,503