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Note 3 - Stock-based Compensation
 6 Months Ended
Jun. 30, 2018
Notes to Financial Statements  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
3.
Stock-Based Compensation
 
The Company’s
2006
Incentive Plan (“the Plan”) provides for cash based awards or the grant or issuance of stock-based awards. As of
June 30, 2018,
80
thousand shares remained available for future grant under the Plan.
 
A summary of the Company’s stock option activity for the
six
months ended
June 30, 2018
is as follows (in
000’s
except per share amounts):
 
      Number of
Shares		   Weighted Average
Exercise Price
Per Share		   Weighted Average
Remaining
Contractual Life		   Aggregate
Intrinsic
Value
(1)
  Outstanding, December 31, 2017      
279
     $
15.40
      
8.7 years
     $
1,436
  
  Granted      
117
     $
21.04
      
 
      
 
  
  Exercised      
-
      
 
      
 
      
 
  
  Forfeited      
-
      
 
      
 
      
 
  
  Outstanding, June 30, 2018      
396
     $
17.07
      
8.7 years
     $
1,068
  
                                     
  Exercisable, June 30, 2018      
133
     $
14.82
      
8.1 years
     $
590
  
 
(
1
)
 The aggregate intrinsic value on this table was calculated based on the amount, if any, by which the closing market value of the Company’s stock on
June 30, 2018 (
$19.24
) exceeded the exercise price of the underlying options, multiplied by the number of shares subject to each option.
 
A summary of the Company’s stock unit award activity for the
six
months ended
June 30, 2018
is as follows (in
000’s
except per share amounts):
 
      Number of Shares   Weighted Average Price per Share
(2)
   Weighted Average Fair Value
(2)
               
  Outstanding & Unvested, December 31, 2017    
33
     $
16.08
     $
516
  
  Granted    
6
     $
21.04
     $
126
  
  Converted to common stock    
(15
 )    
 
      
 
  
  Cancelled    
(5
 )    
 
      
 
  
  Forfeited    
-
      
 
      
 
  
  Outstanding & Unvested, June 30, 2018    
19
     $
18.20
     $
343
  
 
(
2
)		 Weighted average price per share is the weighted grant price based on the closing market price of each of the stock grants related to each grant of stock unit awards. The weighted average fair value is the weighted average share price times the number of shares.
 
As of
June 30, 2018,
a total of
495
thousand shares of common stock were reserved for issuance under the Plan. As of
June 30, 2018,
the unamortized fair value of awards relating to outstanding SUAs and options was
$1.5
million, which is expected to be amortized over a weighted average period of
3.3
years.