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Note 5 - Stock-based Compensation
6 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]
5.
Stock-Based Compensation
  
The Company maintains a 
2019
Equity Incentive Plan (the
“2019
 Plan”). The
2019
 Plan replaced the
1995
Incentive Stock Option Plan (the
"1995
Plan) upon its ratification by shareholders in
April 2019.   
The
1995
plan authorized the issuance of up to
442,750
shares of common stock.  Of those shares,
16,000
were subject to outstanding options as of
June 30, 2019. 
Awards granted under the
1995
 Plan will remain in effect until they are exercised or expire according to their terms.    At the time the
2019
Plan was approved, there were
102,157
shares reserved for future grants under the
1995
Plan which will
no
longer be available for future grants.  
 
Under the terms of the
2019
 Plan, the number of shares of common stock that
may
be the subject of awards and issued under the
2019
 Plan was initially set at
102,157.
  Subsequent to the approval of the
2019
Plan,
750
outstanding options granted under the
1995
were forfeited.  Under the terms of the
2019
Plan, those forfeited options are added back to the
2019
Plan reserve pool bringing the number of shares of common stock available for future awards under the
2019
 Plan to
102,907.
  As of
June 30, 2019
no
awards have been granted under the
2019
 Plan.
 
The Company charged compensation cost of approximately
$1,900
against income for the
three
months ended
June 
30,
2019
 and approximately
$3,600
for the
three
months ended
June 
30,
2018.
  For the
first
six
months of
2019,
the Company charged compensation cost of approximately
$3,800
 and approximately
$6,500
for the same period in
2018.
  As of
June 
30,
2019,
there was approximately
$8,800
of unrecognized compensation cost related to unvested share-based compensation awards. That cost is expected to be recognized over the next
three
years.
  
The Company receives a tax deduction for certain stock option exercises during the period in which the options are exercised, generally for the excess of the market price at the time the stock options are exercised over the exercise price of the options, which increases additional paid in capital and reduces income taxes payable.
 
 
No
stock options were exercised during the
six
 months ended
June 30, 2019 
or
June 30, 2018.
 
There were
no
options granted during the
six
months ended
June 30, 2019. 
During the
six
months ended
June 30, 2018,
2,750
options were granted.  The fair value of options granted during the
six
months ended
June 30, 2018
was estimated using the Black Scholes option pricing model with the following assumptions:
 
   
2018
 
Dividend yield
   
0
 
Expected volatility
   
40.0%
 
Expected life of option (years)    
5
 
Risk-free interest rate
   
2.8%
 
Fair value of each option on grant date
   
$3.38
 
 
 
  
Stock option activity during the
six
 months ended
June 30, 2019 
was as follows:
 
   
 
 
 
 
Weighted
 
   
 
 
 
 
Average
 
   
 
 
 
 
Exercise
 
   
Shares
   
Price
 
Outstanding at January 1, 2019
   
18,000
    $
13.22
 
Granted
   
     
 
Exercised
   
     
 
Expired and forfeited
   
(2,000
)    
21.69
 
Outstanding at June 30, 2019
   
16,000
    $
12.17
 
Exercisable at June 30, 2019
   
13,415
    $
12.83
 
  
The aggregate intrinsic value of all options outstanding and exercisable at
June 30, 2019 
was
$0.