Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Share-based Compensation

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Note 9 - Share-based Compensation
3 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Note
9.
Share-based Compensation:
 
During the quarter ended
September 30, 2018
and
2017,
the Company granted 
0.9
million and
0.6
million stock options at weighted average grant prices of
$173.33
and
$114.60
and weighted average fair values of
$34.30
and
$20.47,
respectively. During the quarter ended
September 30, 2018
and
2017,
the Company granted 
53,903
and
500
restricted stock units at a weighted average fair value of
$170.74
and
$122.57,
respectively. During the quarter ended
September 30, 2018,
the Company granted
11,279
shares of restricted common stock shares at a grant date fair value of
$177.32.
The Company did
not
grant any shares of restricted common stock during the quarter ended
September 30, 2017.
 
Stock options for 
166,577
and
32,625
shares of common stock with total intrinsic values of
$14.9
million and
$0.9
million were exercised during the quarter ended
September 30, 2018
and
2017,
respectively.
 
Stock-based compensation expense of
$11.6
million and
$3.8
million was included in selling, general and administrative expenses for the quarter ended
September 30, 2018
and
2017,
respectively. As of
September 30, 2018,
there was
$42.7
million of unrecognized compensation cost related to non-vested stock options, non-vested restricted stock units and non-vested restricted stock. The weighted average period over which the compensation cost is expected to be recognized is 
2.4
years.