Annual report pursuant to section 13 and 15(d)

Acquisitions - Additional Information (Detail)

Acquisitions - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended			12 Months Ended	1 Months Ended			12 Months Ended		1 Months Ended	12 Months Ended			12 Months Ended	1 Months Ended	12 Months Ended	1 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended
Acquisitions - Additional Information (Detail) (USD $)	Aug. 22, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Nov. 15, 2013 Tri-State DE LLC	Nov. 15, 2013 Tri-State DE LLC Common Stock	Aug. 22, 2013 Relume Technologies Inc	Dec. 31, 2013 Relume Technologies Inc	Aug. 22, 2013 Relume Technologies Inc Common Stock	Oct. 09, 2013 Elite LED Solutions Incorporated	Mar. 31, 2013 Elite LED Solutions Incorporated	Dec. 31, 2013 Elite LED Solutions Incorporated	Mar. 08, 2013 Elite LED Solutions Incorporated	Dec. 31, 2012 Seesmart Technologies Incorporated	Dec. 31, 2013 Seesmart Technologies Incorporated	Dec. 31, 2012 Seesmart Technologies Incorporated	Dec. 20, 2012 Seesmart Technologies Incorporated	Dec. 31, 2013 Seesmart Technologies Incorporated Distributions	Dec. 31, 2012 Seesmart Technologies Incorporated Common Stock	Dec. 31, 2013 Seesmart Technologies Incorporated Common Stock Distributions	Dec. 31, 2012 Seesmart Technologies Incorporated Series D Convertible Preferred Stock	Dec. 31, 2013 Seesmart Technologies Incorporated Series D Preferred Stock Distributions	Mar. 31, 2013 Seesmart Technologies Incorporated Convertible debt accelerated under change in control	Jun. 30, 2013 Seesmart Technologies Incorporated Convertible debt accelerated under change in control	Mar. 31, 2013 Seesmart Technologies Incorporated Convertible debt accelerated under change in control Debt Repayment	Mar. 31, 2013 Seesmart Technologies Incorporated Convertible debt accelerated under change in control Common Stock Debt Repayment
Business Acquisition [Line Items]
Business acquisition, cash paid					$ 1,800,000		$ 5,000,000				$ 500,000			$ 10,100,000				$ 3,500,000
Business acquisition, liability incurred					1,500,000
Business acquisition, liability incurred repayment term					6 months
Business acquisition, interest rate on liability incurred					5.00%
Business acquisition, Number of shares issued						543,052			2,174,000		300,000								7,700,000	1,992,996	11,915	738
Business acquisition, value of equity issued						1,600,000			7,300,000										5,000,000		1,000,000
Contingent obligation, number of additional shares to issue						365,628
Business acquisition, contingent consideration					900,000								356,250
Business acquisition, net of estimated working capital adjustment							4,300,000
Proceeds from issuance of convertible preferred stock, net of issuance costs	5,000,000
Cash retained for working capital purposes	700,000
Minimum percentage of Relume's outdoor lighting business	75.00%
Contingent consideration, sales consulting agreement period											5 years
Contingent consideration, monthly fees obligated to be paid											20,000
Contingent consideration, profit sharing percentage											3.00%
Investment and consulting agreement, number of common stock to be issued		42,735									850,000
Common stock vesting period											5 years	5 years
Number of unvested shares cancelled										850,000
Stock based compensation		809,000	45,000	301,000						0
Reduction of goodwill															1,200,000	1,300,000
Preliminary purchase price subject to adjustment																	18,300,000
Undistributed consideration and unfunded escrow amount																		427,000
Percentage of premium on convertible debt principal																								20.00%
Seesmart notes payable assumed					80,000			26,000																3,400,000
Conversion price per share		$ 0.13																							$ 0.6959
Conversion of convertible securities, value of shares issued																										1,000,000
Conversion of convertible securities, number of shares issued																										1,479,947
Loss on debt extinguishment								(4,157,000)																	68,000
Payment to holders elected to be paid in cash																							2,400,000
Revenue from the date of acquisition		15,300,000
Net income from the date of acquisition		$ 400,000