Business Acquisition (Details) (USD $)	3 Months Ended			6 Months Ended		8 Months Ended	6 Months Ended						3 Months Ended	6 Months Ended
	Jun. 30, 2012	Mar. 31, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2012 Vehicles [Member]	Jun. 30, 2012 Lab equipment [Member]	Jun. 30, 2012 Office furniture and equipment [Member]	Jun. 30, 2012 Promissory note [Member]	Oct. 31, 2011 Promissory note [Member]	Oct. 31, 2011 SEC Radcon Alliance, LLC [Member]	Jun. 30, 2012 Safety and Ecology Holdings Corporation [Member]	Jun. 30, 2012 Safety and Ecology Holdings Corporation [Member]	Oct. 31, 2011 Safety and Ecology Holdings Corporation [Member]
Business Acquisition [Line Items]
Percentage of voting interests acquired (in hundredths)												75.00%
Total consideration	$ 17,885,000			$ 17,885,000		$ 17,885,000									$ 17,885,000
Cash consideration															14,885,000
Common Stock consideration															1,000,000
Promissory note											2,500,000
Annual rate of interest (in hundredths)											6.00%
Number of monthly installments											36
Prepaid principal amount of the Note										500,000
Number of days from acquisition for repayment of promissory notes				10 days
Number of days for trading of common stock to determine average closing price				30 days
Voting power of management investors (in hundredths)														19.90%
Escrow deposit															2,000,000
Escrow Deposit received														1,500,000
Claim for remaining balance in escrow														500,000
Restricted shares of our Common Stock (in shares)														813,007
Total consideration													1,000,000	1,000,000
Price of restricted common share (in dollars per share)													$ 1.23	$ 1.23
Revenues	33,978,000		28,913,000	72,051,000	52,528,000								17,325,000	35,927,000
Net loss	(1,291,000)		2,520,000	(2,341,000)	2,199,000								813,000	2,077,000
Preliminary purchase price allocation of the fair values of the assets acquired and liabilities assumed [Abstract]
Current assets	21,993,000			21,993,000		21,993,000
Property, plant and equipment	2,135,000			2,135,000		2,135,000	583,000	1,235,000	317,000
Intangible assets	4,474,000			4,474,000		4,474,000
Goodwill	10,852,000			10,852,000		10,852,000
Total assets acquired	39,454,000			39,454,000		39,454,000
Current liabilities	(15,728,000)			(15,728,000)		(15,728,000)
Customer contracts	(3,380,000)			(3,380,000)		(3,380,000)
Non-current liabilities	(2,091,000)			(2,091,000)		(2,091,000)
Total liabilities acquired	(21,199,000)			(21,199,000)		(21,199,000)
Non Controlling Interest	(370,000)			(370,000)		(370,000)
Total consideration	17,885,000			17,885,000		17,885,000									17,885,000
Property, Plant and Equipment [Line Items]
Total tangible assets	2,135,000			2,135,000		2,135,000	583,000	1,235,000	317,000
Weighted Average Estimated Useful Life							5 years	7 years	4 years
Acquisition-related costs	28,000	20,000				659,000
Pro forma financial information [Abstract]
Net revenues			55,853,000		104,040,000
Net income from continuing operations			$ 974,000		$ 1,502,000
Net income per share from continuing operations- basic			$ 0.02		$ 0.03
Net income per share from continuing operations- diluted			$ 0.02		$ 0.03