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Note 9 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details) (USD $)
 1 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended 1 Months Ended
Aug. 31, 2011
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jan. 23, 2014
Dec. 31, 2013
Jun. 30, 2014
Other Operating Income Net [Member]
Jun. 30, 2014
Other Operating Income Net [Member]
Jun. 30, 2014
Interest Income [Member]
Dec. 30, 2013
Upon Death [Member]
CEO Of RHB [Member]
Dec. 30, 2013
Upon Permanent Disability [Member]
CEO Of RHB [Member]
Jan. 23, 2014
Before Amendment [Member]
Jan. 31, 2012
RHB [Member]
Jun. 30, 2013
RHB [Member]
Jun. 30, 2013
RHB [Member]
Apr. 27, 2012
RHB [Member]
Jun. 20, 2014
RHB Inc [Member]
Jan. 31, 2012
SWR Inc [Member]
Aug. 31, 2011
Years 2011 To 2015 [Member]
Aug. 31, 2011
Jun. 30, 2013
Minimum [Member]
Jun. 30, 2013
Maximum [Member]
Note 9 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details) [Line Items]                                                
Number Of Assumed Construction Contracts                                       6        
Deferred Revenue                                       $ 25,000,000        
Non-Compete Agreement Term                                       2 years        
Noncontrolling Interest, Ownership Percentage by Parent                                   50.00%            
Long-term Line of Credit                             5,000,000                  
Noncontrolling Interests Offer To Buy Percentage                             50.00%                  
Noncontrolling Interests Offer To Sell Percentage                             50.00%                  
Liquidation Value Multiplier                             4.5                  
Revaluation Pre-Tax Benenfit                               2,300,000                
Revaluation Benefit, Net of Tax                               1,500,000                
Revaluation Pre-Tax Charge                                 666,000              
Revaluation Charge, Net of Tax                                 433,000              
Obligation To Purchase Member Interest                       20,000,000 18,000,000                      
Obligation To Purchase Percentage Member Interest                       50.00%                        
Cash Surrender Value of Life Insurance                       20,000,000                        
Increase (Decrease) In Undistributed Earnings                 1,300,000 1,500,000                            
Member Interest Sold, Percentage                                     50.00%          
Business Acquisition Additional Price Payments 5,000,000                                              
Business Acquisition Additional Price Payments Term 5 years                                              
Business Acquisition Earn-Out Percentage 50.00%                                              
Business Acquisition Earn-Out Calculated Floor                                         2,000,000 1,200,000    
Business Acquisition Undiscounted Earn Out Liability Decrease             600,000                                  
Business Acquisition Undiscounted Earn-Out Liability   300,000     300,000     1,400,000                                
Business Acquisition Earn Out Payment     800,000                                          
Business Acquisition Total Available Earn-Out Liability             10,000,000             5,000,000                    
EBITDA Earn Out Decrease Floor             1,500,000                                  
EBITDA Earn-Out Increase Floor   17,900,000     17,900,000   2,000,000                                  
Forcasted EBITDA Percentage                                             0.00% 22.00%
Business Acquisition Cost Of Acquired Entity Discounted Present Value Of Additional Purchase Price         300,000                                      
Revaluation Benefit                     300,000                          
Business Acquisition Undiscounted Earn-Out Liability Increase   9,000,000     9,000,000                                      
Net Income (Loss) Attributable to Noncontrolling Interest   1,245,000   805,000 1,520,000 966,000                                    
Payments to Noncontrolling Interests   $ 200,000     $ 1,190,000 $ 3,244,000