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Note 6 - Goodwill and Other Intangible Assets, Net Schedule of Finite-Lived Intangible Assets Including Impairment (Details) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2017
Jun. 30, 2018
Dec. 31, 2017
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Net   $ 48,257  
Customer Relationships [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross [1]     $ 82,530
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment [1]     (41,596)
Finite-Lived Intangible Assets, Net [1]     40,934
Technology-Based Intangible Assets [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross [2]     15,250
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment [2]     (8,922)
Finite-Lived Intangible Assets, Net [2]     6,328
Trademarks and Trade Names [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross     8,340
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment     (3,003)
Finite-Lived Intangible Assets, Net     5,337
Order or Production Backlog [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross     6,680
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment     (6,006)
Finite-Lived Intangible Assets, Net     674
Noncompete Agreements [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross     185
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment     (168)
Finite-Lived Intangible Assets, Net     17
Mortgage and Real Estate Services Segment [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross   113,448 112,985
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment   (65,191) (59,695)
Finite-Lived Intangible Assets, Net   48,257 $ 53,290
Mortgage and Real Estate Services Segment [Member] | Customer Relationships [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of Intangible Assets, Finite-lived $ 14,900    
Finite-Lived Intangible Assets, Gross [1]   82,530  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment [1]   (44,912)  
Finite-Lived Intangible Assets, Net [1]   37,618  
Mortgage and Real Estate Services Segment [Member] | Technology-Based Intangible Assets [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Impairment of Intangible Assets, Finite-lived $ 900    
Finite-Lived Intangible Assets, Gross [2]   15,250  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment [2]   (9,992)  
Finite-Lived Intangible Assets, Net [2]   5,258  
Mortgage and Real Estate Services Segment [Member] | Trademarks [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross   8,340  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment   (3,434)  
Finite-Lived Intangible Assets, Net   4,906  
Mortgage and Real Estate Services Segment [Member] | Order or Production Backlog [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross   6,680  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment   (6,680)  
Finite-Lived Intangible Assets, Net   0  
Mortgage and Real Estate Services Segment [Member] | Noncompete Agreements [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross   185  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment   (173)  
Finite-Lived Intangible Assets, Net   12  
Mortgage and Real Estate Services Segment [Member] | Licensing Agreements [Member]      
Acquired Finite-Lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross   463  
Finite-Lived Intangible Assets, Accumulated Amortization and Impairment   0  
Finite-Lived Intangible Assets, Net   $ 463  
[1] Includes an impairment charge of $14.9 million in the quarter ended June 30, 2017.
[2] Includes an impairment charge of $0.9 million in the quarter ended June 30, 2017.