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Note 10 - Deferred Tax Assets and Liabilities (Details) - USD ($)
Dec. 31, 2015
Dec. 31, 2014
Current [Member]    
Assets related to:    
Accrued compensation and other $ 2,084,000  
Amortization and impairment of goodwill 6,705,000  
Noncontrolling interest 2,247,000  
Deferred revenue 688,000  
Revaluation of put/call liabilities 18,638,000  
Net operating loss carryforwards 39,317,000  
Valuation allowance for deferred tax assets (56,399,000)  
Liabilities related to:    
Depreciation of property and equipment (11,766,000)  
Other $ (20,000)  
Net asset  
Long-term [Member]    
Assets related to:    
Accrued compensation and other   $ 1,868,000
Amortization and impairment of goodwill   9,489,000
Noncontrolling interest   2,326,000
Deferred revenue   125,000
Revaluation of put/call liabilities   8,471,000
Net operating loss carryforwards   30,822,000
Valuation allowance for deferred tax assets   (37,774,000)
Liabilities related to:    
Depreciation of property and equipment   (14,186,000)
Other   $ (15,000)
Net asset  
Valuation allowance for deferred tax assets $ (56,400,000)  
Receivables from and equity in construction joint ventures $ (1,494,000) $ (1,126,000)