Quarterly report pursuant to Section 13 or 15(d)

Acquisitions - Additional Information (Detail)

Acquisitions - Additional Information (Detail) $ / shares in Units, $ in Thousands				6 Months Ended
	Feb. 05, 2015 USD ($) Installment	Dec. 18, 2014 USD ($) Installment $ / shares shares	Apr. 17, 2014 USD ($) Installment shares	Jun. 30, 2015 USD ($) shares	Mar. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares	Jun. 30, 2014 USD ($)
Business Acquisition [Line Items]
Business acquisition, number of shares issued \| shares				5,059,334
Business acquisition consideration payable							$ 7,919
Common stock shares issued \| shares				139,899,000		139,899,000
Common Stock, Value				$ 140		$ 130
Goodwill				$ 42,991		$ 42,991
Value Lighting
Business Acquisition [Line Items]
Business acquisition cash Consideration			$ 10,600
Business acquisition aggregate purchase consideration			$ 39,300
Business acquisition, number of shares issued \| shares			8,468,192
Business acquisition, number of Installments \| Installment			4
Business acquisition, value of equity issued			$ 20,900
Business acquisition, contingent consideration payable in cash or common stock, maximum			11,000
Business acquisition consideration payable			7,800
Common stock shares issued \| shares					4,900,000
Common Stock, Value					$ 5,500
Tangible assets			16,260
Identifiable intangible assets			19,951
Goodwill			18,635
Liabilities assumed			18,438
Purchase price			$ 39,309
DPI Management
Business Acquisition [Line Items]
Business acquisition aggregate purchase consideration	$ 600
Business acquisition cash consideration	$ 100
Business acquisition, number of Installment payments \| Installment	2
Inventory	$ 600
DPI Management \| Cash payable in four installments through March 1, 2016
Business Acquisition [Line Items]
Business acquisition consideration payable	300
DPI Management \| Payable on September 1, 2016 in cash or common stock
Business Acquisition [Line Items]
Business acquisition consideration payable	$ 200
All Around
Business Acquisition [Line Items]
Business acquisition cash Consideration		$ 900
Business acquisition aggregate purchase consideration		5,000
Business acquisition consideration payable		$ 300
All Around \| Unregistered Restricted Common Stock
Business Acquisition [Line Items]
Business acquisition, number of shares issued \| shares		1,600,000
Business acquisition, number of Installments \| Installment		11
Business acquisition, value of equity issued		$ 1,800
Restricted common stock, issuance commencement date		2015-06
Acquisition floor price per share \| $ / shares		$ 2.00
Issuance of unregistered restricted stock, expected consideration		$ 3,200
Tangible assets		1,700
Identifiable intangible assets		2,200
Goodwill		2,800
Liabilities assumed		1,700
Purchase price		5,000
All Around \| Unregistered Restricted Common Stock \| Preliminary Value
Business Acquisition [Line Items]
Business acquisition floor value of equity issued		$ 1,900