XML 56 R41.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note 1 - Summary of Business and Significant Accounting Policies (Details Textual) - USD ($)
 1 Months Ended 12 Months Ended
Aug. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Long-term Debt, Net of Current Maturities [Member]        
Capital Lease Obligations     $ 0 $ 0
Current Maturities of Long-term Debt [Member]        
Capital Lease Obligations, Current   $ 500,000    
Minimum [Member] | Notes Payable for Transportation and Construction Equipment [Member]        
Debt Instrument, Term   3 years    
Minimum [Member]        
Ownership Interest in Joint Venture   50.00%    
Revenue Recognition Percentage of Completion Range   1 year    
Warranty Term   1 year    
Maximum [Member] | Notes Payable for Transportation and Construction Equipment [Member]        
Debt Instrument, Term   5 years    
Maximum [Member]        
Revenue Recognition Percentage of Completion Range   3 years    
Warranty Term   2 years    
Change Orders Not Approved by Customer [Member]        
Billings in Excess of Cost, Current   $ 1,600,000 3,500,000  
Other Operating Income (Expense) [Member]        
Gain (Loss) on Sale of Long-term Contract $ (1,400,000)      
Other Operating Income [Member] | Contracts Assumed [Member]        
Allowance for Doubtful Accounts Receivable, Write-offs       1,800,000
Allowance for Doubtful Accounts Receivable, Recoveries     1,000,000  
Allowance for Doubtful Accounts Receivable     1,800,000  
Notes Payable for Transportation and Construction Equipment [Member]        
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum   3.12%    
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Maximum   6.29%    
Long-term Contract Receivable [Member]        
Fair Value Inputs, Discount Rate   4.25%    
Reclassification of Current Deferred Tax Assets to Noncurrent Deferred Tax Assets [Member] | December 31, 2014 [Member]        
Prior Period Reclassification Adjustment   $ 1,200,000    
Unbilled Contracts Receivable   0    
Allowance for Doubtful Accounts Receivable, Write-offs   0 0  
Impairment of Long-Lived Assets Held-for-use   0 0 0
Revenues Related to Claims   $ 5,200,000 0 0
Ownership Interest in Joint Venture   50.00%    
Estimated Construction Gross Profit, Before Tax   $ 9,700,000 $ 9,100,000 $ 57,600,000
Estimated Construction Gross Profit Per Diluted Share   $ 0.50 $ 0.50 $ 3.46
Billings in Excess of Cost, Current   $ 30,556,000 $ 25,649,000  
Proceeds from Sale of Long-term Contract $ 7,100,000      
Contract Receivable Discounted Percentage   2.00%    
Notes Payable, Noncurrent   $ 2,200,000    
Contract Receivable Retainage   19,800,000 16,400,000  
Contract Receivable     5,000,000  
Interest Income from Contracts Receivable   200,000 400,000 $ 300,000
Inventory, Net   2,535,000 7,401,000  
Depreciation   16,200,000 18,200,000 18,600,000
Capitalized Debt Fees   1,300,000    
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums   1,100,000 200,000  
Amortization of Financing Costs   $ 300,000 $ 200,000 $ 100,000
Number of Operating Segments   1    
Number of Reportable Segments   1    
Number of Reporting Units   1