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Note 9 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Details) (USD $) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  | 3 Months Ended | 9 Months Ended | 1 Months Ended |  | 1 Months Ended |  | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |  | 1 Months Ended
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Aug. 31, 2011 | Sep. 30, 2014 | Mar. 31, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 | Jan. 23, 2014 | Dec. 31, 2013 | Sep. 30, 2014 Other Operating Income Net [Member] | Sep. 30, 2014 Other Operating Income Net [Member] | Sep. 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] | Aug. 31, 2011 Years 2011 To 2015 [Member] | Aug. 31, 2011 | Sep. 30, 2014 Minimum [Member] | Sep. 30, 2014 Maximum [Member] | Jan. 31, 2012 RHB [Member] | Sep. 30, 2013 RHB [Member] | Sep. 30, 2013 RHB [Member] | Apr. 27, 2012 RHB [Member] | Jun. 20, 2014 RHB Inc [Member] | Jan. 31, 2012 SWR Inc [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 Charge |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000 | 1,900,000 |  |  |
Revaluation Charge, Net of Tax |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 800,000 | 1,200,000 |  |  |
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 |  |  |  |  |  |  |  |  | 500,000 | 2,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
|  | 2,000,000 |  |  | 3,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Member Interest Sold, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00% |
Business Acquisition Additional Price Payments | 5,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
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 |  | 1,718,000 |  | 2,284,000 | 3,238,000 | 3,250,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Noncontrolling Interests |  | $ 0 |  |  | $ 1,190,000 | $ 3,244,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Amount of deferred revenue as of balance sheet date. Deferred revenue represents collections of cash or other assets related to a revenue producing activity for which revenue has not yet been recognized. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 13 -Section A Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 13.A.4(a).Q1 Response) -URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780 + Details
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- Definition The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The parent entity's interest in net assets of the subsidiary, expressed as a percentage. + References No definition available. + Details
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- Definition Amount of Net Income (Loss) attributable to noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=35736750&loc=SL4591551-111686 + Details
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- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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