Summary of Intangible Assets from Continuing Operations (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Intangible Assets Net Excluding Goodwill [Line Items]
Indefinite-lived intangible asset useful life	Indefinite	Indefinite
Gross Carrying Amount	$ 79,665	$ 82,159
Intangible assets gross excluding goodwill	80,065	82,559
Accumulated Amortization	(12,834)	(8,801)
Finite intangible assets, Net Carrying Amount	66,831	73,358
Intangible assets, net	67,231	73,758
Other Intellectual Property
Intangible Assets Net Excluding Goodwill [Line Items]
Indefinite intangible assets, Net Carrying Amount	400	400
Customer Relationships
Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount	50,031	49,995
Accumulated Amortization	(7,909)	(5,904)
Finite intangible assets, Net Carrying Amount	42,122	44,091
Trademarks/trade names
Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount	15,673	15,673
Accumulated Amortization	(1,679)	(965)
Finite intangible assets, Net Carrying Amount	13,994	14,708
Technology
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life		10 years
Gross Carrying Amount	9,077	11,607
Accumulated Amortization	(1,424)	(852)
Finite intangible assets, Net Carrying Amount	7,653	10,755
Non-compete Agreements
Intangible Assets Net Excluding Goodwill [Line Items]
Gross Carrying Amount	4,636	4,636
Accumulated Amortization	(1,778)	(1,047)
Finite intangible assets, Net Carrying Amount	2,858	3,589
Intellectual Property
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	5 years	5 years
Gross Carrying Amount	248	248
Accumulated Amortization	(44)	(33)
Finite intangible assets, Net Carrying Amount	$ 204	$ 215
Minimum | Customer Relationships
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	1 year	3 years
Minimum | Trademarks/trade names
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	3 years	3 years
Minimum | Technology
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	5 years
Minimum | Non-compete Agreements
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	2 years	2 years
Maximum | Customer Relationships
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	11 years	11 years
Maximum | Trademarks/trade names
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	11 years	11 years
Maximum | Technology
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	10 years
Maximum | Non-compete Agreements
Intangible Assets Net Excluding Goodwill [Line Items]
Finite intangible assets, useful life	5 years	5 years