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Goodwill and Intangible Assets - Intangible Assets - Finite Life (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 52,518	$ 52,709
Accumulated Amortization	7,772	5,896
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	1,403	1,423
Accumulated Amortization	1,395	1,383
Employment agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	761	762
Accumulated Amortization	284	221
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	8,936	8,942
Accumulated Amortization	1,429	789
Customer lists [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	41,418	41,582
Accumulated Amortization	$ 4,664	$ 3,503