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5. GOODWILL AND OTHER INTANGIBLE ASSETS (Details Narrative) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Other intangible assets, gross $ 57,500    
Accumulated amortization 23,400    
Amortization expense 2,600 $ 3,000 $ 3,100
Goodwill deductible for tax purposes 99,100    
Noncompete Agreements [Member]      
Other intangible assets, gross 5,900    
Accumulated amortization 5,300    
Trade Names [Member]      
Other intangible assets, gross 10,200    
Accumulated amortization 1,500    
Dispositions of intangibles 750    
Customer Relationships [Member]      
Other intangible assets, gross 4,000    
Accumulated amortization $ 4,000    
Amortization period 5 years    
Management Service Contracts [Member]      
Amortization period 25 years    
Developed Technology [Member]      
Amortization period 5 years