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Business Acquisition (Details) (USD $)
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3 Months Ended | 6 Months Ended | 8 Months Ended | 3 Months Ended | 6 Months Ended | 6 Months Ended | 6 Months Ended | ||||||||
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Jun. 30, 2012
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Mar. 31, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Jun. 30, 2011
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Jun. 30, 2012
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Oct. 31, 2011
SEC Radcon Alliance, LLC [Member]
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Jun. 30, 2012
Safety and Ecology Holdings Corporation [Member]
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Jun. 30, 2012
Safety and Ecology Holdings Corporation [Member]
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Oct. 31, 2011
Safety and Ecology Holdings Corporation [Member]
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Jun. 30, 2012
Promissory note [Member]
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Oct. 31, 2011
Promissory note [Member]
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Jun. 30, 2012
Vehicles [Member]
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Jun. 30, 2012
Lab equipment [Member]
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Jun. 30, 2012
Office furniture and equipment [Member]
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| 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 | |||||||||||||