Annual report pursuant to section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

v2.4.0.8
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Permit
Phases
Dec. 31, 2012
Restricted Cash [Abstract]    
Restricted cash held in escrow for worker's compensation policy $ 35,000  
Accounts Receivable [Line Items]    
Accounts receivable payment term payment within 30 or 60 days from the invoice date  
Minimum period to review accounts receivable 60 days  
Minimum period for unbilled receivables 12 months  
Property, Plant and Equipment [Line Items]    
Impairment of fixed assets 130,000  
Tangible asset impairment 0  
Depreciation expense 3,381,000 4,795,000
Capitalized Interest [Abstract]    
Minimum period for construction of major projects to capitalize interest cost 1 year  
Interest costs capitalized during the period 0 0
Goodwill and Other Intangible Assets [Abstract]    
Number of definite lived permit 1  
Income Taxes [Abstract]    
Minimum likelihood of tax benefit to be realized (in hundredths) 50.00%  
Revenue Recognition [Abstract]    
Number of processing phases 3  
Self Insurance [Abstract]    
Self-insurance reserve 473,000 644,000
Self-insurance expenses for continuing operations 2,906,000 4,388,000
Self insurance expenses for discontinued operations 160,000 171,000
Stock Options [Member]
    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Potential shares excluded from above weighted average share calculations due to their anti-dilutive effect (in shares) 339,000 517,000
Accounts Receivable [Member] | Clauss Construction [Member]
    
Concentration Risk [Line Items]    
Total AR 1,145,000 1,486,000
Percent of Total A/R (in hundredths) 14.20% 13.00%
Revenue [Member] | Federal Government [Member]
    
Concentration Risk [Line Items]    
Revenue from major customer 47,557,000 101,533,000
Percentage of revenue from major customer (in hundredths) 63.90% 79.60%
Revenue [Member] | CH Plateau Remediation Company [Member]
    
Concentration Risk [Line Items]    
Revenue from major customer $ 19,922,000 $ 24,652,000
Percentage of revenue from major customer (in hundredths) 26.80% 19.30%
Building and Building Improvements [Member] | Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 10 years  
Building and Building Improvements [Member] | Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 40 years  
Office Furniture And Equipment [Member] | Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Office Furniture And Equipment [Member] | Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 7 years  
Vehicles [Member] | Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Vehicles [Member] | Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 7 years  
Decontamination And Processing Equipment [Member] | Minimum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 3 years  
Decontamination And Processing Equipment [Member] | Maximum [Member]
    
Property, Plant and Equipment [Line Items]    
Property and equipment, useful life 7 years  
Deemed Uncollected [Member]
    
Accounts Receivable [Line Items]    
Percentage of reserves for doubtful accounts receivable (in hundredths) 100.00%