Note 15 - Income Taxes (Tables)
 12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]
 
 
Year Ended
 
 
 
December 31,
 
 
December 31,
 
 
December 31,
 
 
 
2016
 
 
2015
 
 
2014
 
Current:
                        
Federal
  $
6,646
     $
4,557
     $
2,520
 
State
   
1,730
      
1,104
     
309
 
Total current income tax expense
   
8,376
      
5,661
      
2,829
  
                         
Deferred:
                        
Federal
   
(1,452
 )    
(565
 )    
190
 
State
   
(385
 )    
(101
 )    
57
 
Total deferred income tax (benefit)
   
(1,837
 )    
(666
 )    
247
  
                         
Total income tax expense
  $
6,539
     $
4,995
     $
3,076
  
Schedule of Deferred Tax Assets and Liabilities [Table Text Block]
 
 
December 31,
 
 
December 31,
 
 
 
2016
 
 
2015
 
Deferred tax asset:
                
Allowance for doubtful accounts
  $
580
     $
430
  
Accrued compensation
   
2,548
      
1,722
  
Deferred rent
   
296
      
295
  
State income taxes
   
938
      
251
  
Other
   
138
      
161
  
Total deferred tax asset
   
4,500
      
2,859
  
                 
Deferred tax liability:
                
Acquired intangibles
   $
(7,682
 )   $
(2,129
 )
Cash to accrual adjustment
    
(2,057
 )    
-
 
Depreciation and amortization
   
(907
 )    
(699
 )
Other
    
(51
 )    
(173
 )
Total deferred tax liability
   
(10,697
 )    
(3,001
 )
Net deferred tax liability
   $
(6,197
 )   $
(142
 )
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]
 
 
Year Ended
 
 
 
December 31,
 
 
December 31,
 
 
December 31,
 
 
 
2016
 
 
2015
 
 
2014
 
                         
Tax at federal statutory rate
  $
6,351
     $
4,586
     $
2,709
 
State taxes, net of Federal benefit
   
960
      
742
      
392
 
Federal and state tax credits
   
(165
 )    
(200
 )    
(283
 )
Changes in unrecognized tax position
    
50
     
20
     
550
 
Domestic production activities deduction
    
(602
 )    
(312
 )    
(230
 )
Other permanent differences, net
   
(55
 )    
159
     
(62
 )
Total income tax expense
  $
6,539
     $
4,995
      
3,076
 
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]
 
 
December 31,
 
 
December 31,
 
 
 
2016
 
 
2015
 
                 
Balance, beginning of period
   $
570
    $
550
 
Additions based on tax positions related to the current year
    
16
     
15
 
Additions for tax positions of prior years
    
84
     
5
 
Additions due to acquistions
    
150
     
-
 
Reductions for positions of prior years
    
(50
 )    
-
 
                 
Balance, end of period
   $
770
    $
570