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Note 2 - Acquisitions and Subsidiaries and Joint Ventures with Noncontrolling Owners' Interests (Tables) | 12 Months Ended
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Dec. 31, 2014
Noncontrolling Interest [Abstract] |
Schedule of Components of Agreement Obligation [Table Text Block] |
|  | Years Ended December 31, |
|  | 2014 |  |  | 2013 |
Member’s interest subject to mandatory redemption |  | $ | 20,000 |  |  | $ | 20,000 |
Undistributed earnings attributable to this interest |  |  | 6,079 |  |  |  | 3,989 |
Earnings distributed |  |  | (3,200 | ) |  |  | - |
Total liability |  | $ | 22,879 |  |  | $ | 23,989 |
Schedule of Changes in Noncontrolling Interests and Joint Ventures [Table Text Block] |
|  | Years Ended December 31, |
|  | 2014 |  |  | 2013 |  |  | 2012 |
Balance, beginning of period |  | $ | 4,097 |  |  | $ | 20,046 |  |  | $ | 18,375 |
Net income attributable to noncontrolling interest included in liabilities |  |  | - |  |  |  | 2,024 |  |  |  | 16,941 |
Net income attributable to noncontrolling interest included in equity |  |  | 4,556 |  |  |  | 1,879 |  |  |  | 1,068 |
Accretion of interest on puts |  |  | - |  |  |  | - |  |  |  | 993 |
Change in fair value of RLW put/call |  |  | - |  |  |  | (59 | ) |  |  | 3,797 |
Change in fair value of RHB put/call |  |  | - |  |  |  | 1,875 |  |  |  | 2,473 |
Change due to the RHB amendment |  |  | - |  |  |  | (18,103 | ) |  |  | - |
Issuance of noncontrolling interest in RHB in exchange for net assets of acquired companies |  |  | - |  |  |  | - |  |  |  | 9,767 |
Distributions to noncontrolling interests owners |  |  | (1,191 | ) |  |  | (3,056 | ) |  |  | (10,185 | )
Acquisition of RLW noncontrolling interest |  |  | - |  |  |  | (509 | ) |  |  | (23,144 | )
Other |  |  | - |  |  |  | - |  |  |  | (39 | )
Balance, end of period |  | $ | 7,462 |  |  | $ | 4,097 |  |  | $ | 20,046 |

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