Intangible Assets Subject to Amortization (Detail)

Intangible Assets Subject to Amortization (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount		$ 21,601
Accumulated Amortization	(8,756)	(3,732)
Net Carrying Amount	34,784us-gaap_FiniteLivedIntangibleAssetsNet	17,869us-gaap_FiniteLivedIntangibleAssetsNet
Patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	268	268
Accumulated Amortization	(153)	(130)
Net Carrying Amount	115	138
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,358	6,034
Accumulated Amortization	(1,280)	(615)
Net Carrying Amount	10,078	5,419
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	24,455	10,643
Accumulated Amortization	(2,942)	(1,248)
Net Carrying Amount	21,513	9,395
Customer Contracts
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,877	1,877
Accumulated Amortization	(1,669)	(1,613)
Net Carrying Amount	208	264
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,953	2,020
Accumulated Amortization	(196)	(67)
Net Carrying Amount	1,757	1,953
Favorable Leases
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	334	218
Accumulated Amortization	(64)	(3)
Net Carrying Amount	270	215
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	740	480
Accumulated Amortization	(151)	(10)
Net Carrying Amount	589	470
Backlog
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,619
Accumulated Amortization	(2,369)
Net Carrying Amount	250
Product Certification
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	61	61
Accumulated Amortization	(57)	(46)
Net Carrying Amount	4	15
Intangible Asset Amortization
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	43,665
Accumulated Amortization	(8,881)
Net Carrying Amount	$ 34,784

Annual report pursuant to Section 13 and 15(d)

Intangible Assets Subject to Amortization (Detail)