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Note 2 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details) (USD $)
 3 Months Ended 12 Months Ended 1 Months Ended 1 Months Ended 12 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 1 Months Ended 5 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended 36 Months Ended 36 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Sep. 30, 2013
Dec. 31, 2013
Upon Death [Member]
CEO of RHB [Member]
Dec. 31, 2013
Upon Permanent Disability [Member]
CEO of RHB [Member]
Aug. 31, 2011
Years 2011 to 2015 [Member]
JBC [Member]
Aug. 31, 2011
JBC [Member]
Jan. 23, 2014
If certain EBITDA thresholds are met [Member]
JBC [Member]
Jan. 23, 2014
For 2014 and 2015 [Member]
JBC [Member]
Jan. 23, 2014
For 2016 and 2017 [Member]
JBC [Member]
Jan. 23, 2014
For the Years 2014 Through 2017 [Member]
Minimum [Member]
JBC [Member]
Jan. 23, 2014
For the Years 2014 Through 2017 [Member]
Maximum [Member]
JBC [Member]
Dec. 31, 2013
Current obligations for noncontrolling owners [Member]
Dec. 31, 2013
Member’s interest subject to mandatory redemption [Member]
Dec. 31, 2013
RHB [Member]
Dec. 31, 2012
RHB [Member]
Apr. 27, 2012
RHB [Member]
Dec. 31, 2012
RLW [Member]
Dec. 31, 2011
RLW [Member]
Dec. 31, 2012
SWR, Inc. [Member[
Dec. 31, 2013
CEO of RHB [Member]
Dec. 31, 2012
RHBP [Member]
Dec. 31, 2012
Contracts Assumed [Member]
Aug. 31, 2011
JBC [Member]
Dec. 31, 2011
JBC [Member]
Dec. 31, 2013
JBC [Member]
Jan. 23, 2014
JBC [Member]
Sep. 30, 2013
JBC [Member]
Aug. 31, 2011
Myers [Member]
Dec. 31, 2011
Myers [Member]
Dec. 31, 2013
Myers [Member]
Apr. 30, 2013
RLW [Member]
Dec. 31, 2013
RLW [Member]
Dec. 31, 2012
RLW [Member]
Dec. 31, 2011
RLW [Member]
Dec. 31, 2012
RLW [Member]
Dec. 31, 2009
RLW [Member]
Dec. 31, 2012
Minimum [Member]
RLW [Member]
Dec. 31, 2012
Maximum [Member]
RLW [Member]
Note 2 - 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%                       50.00%                    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net                                               9,800,000       3,131,000         743,000                
Adjustments to Additional Paid in Capital, Other                                               233,000                                  
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Noncurrent                                               360,000                                  
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual                                                 26,100,000                                
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual                                               152,000                                  
Related Party Transaction, Amounts of Transaction   362,000 416,000 314,000                           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 Charge                                 1,900,000 2,500,000                                              
Obligation to Purchase Member Interest           20,000,000 18,000,000                                                                    
Cash Surrender Value of Life Insurance           20,000,000                                                                      
Obligation For Noncontrolling Owners Interest In Subsidiaries And Joint Ventures     14,721,000   17,800,000                                                                        
Redeemable Noncontrolling Interest, Equity, Fair Value         14,100,000                                                                        
Undistributed Earnings of Domestic Subsidiaries 3,989,000 3,989,000 0   3,700,000                                                                        
Adjustment to Member's Interest                                             5,900,000                                    
Increase in Undistributed Earnings 344,000                                                                                
Business Acquisition Additional Price Payments                                                   5,000,000               509,000   23,100,000          
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   1,500,000 2,000,000                                                          
BusinessAcquisitionPurchasePriceAllocBusinessAcquisitionPurchasePriceAllocationGoodwillDBusiness Acquisition Purchase Price Allocation Goodwill Deductible TermeductibleTermationGoodwillDeductibleTerm                                                     15 years       15 years                    
Business Acquisition, Transaction Costs                                                     328,000         128,000                  
Fair Value of Assets Acquired                                                     3,800,000         2,100,000                  
Business Acquisition Undiscounted Earn-Out Liability                   10,000,000                                   1,500,000 1,400,000 2,000,000                      
Forcasted EBITDA Percentage                         0.00% 36.80%                                                      
Business Acquisition, Cost of Acquired Entity, Discounted Present Value of Additional Purchase Price                                                   2,400,000   1,400,000                          
Business Acquisition Undiscounted Earn-Out Liability Increase                                                       8,500,000                          
EBITDA Earn-Out Increase Floor                                                       17,000,000                          
Business Acquisition Remaining Percentage Of Voting Interests                                                                     20.00%            
Business Acquisition Purchase Price Percentage                                                                           20.00%      
Business Acquisition Purchase Price Multiplier                                                                               4 4.5
Derivative, Basis Spread on Variable Rate                                                                             2.00%    
Accretion Expense                                                                       993,000 881,000        
Increase (Decrease) in Put/Call Liability                                       3,800,000 1,300,000                                        
Other Tax Expense (Benefit)                                       1,300,000 500,000                                        
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners                                                                       20.00%   20.00%      
Business Acquisition, Payments of Undistributed Earnings                                                                   2,300,000              
Net Income (Loss) Attributable to Noncontrolling Interest   3,903,000 18,009,000 1,196,000                                                                          
Net Income Attributable To Noncontrolling Interest Included In Liabilities   2,024,000 16,941,000 935,000                     68,000 2,100,000                                                  
Net Income Attributable To Noncontrolling Interest Included In Equity   1,879,000 1,068,000 261,000                                                                          
Income (Loss) from Continuing Operations Attributable to Noncontrolling Interest                                       6,700,000                                          
Increase (Decrease) in Income Taxes                                                                       $ (2,400,000)