Stock Based Compensation (Tables)

A summary of option plan activity under the plans is as follows:



	Number of Shares		Weighted Average Exercise Price		Aggregate Intrinsic Value
Outstanding July 1, 2014	125		$	22.29
Granted	—		—
Forfeited	—		—
Exercised	(25	)	19.17
Outstanding July 1, 2015	100		23.07
Granted	—		—
Forfeited	—		—
Exercised	(50	)	23.99
Outstanding July 1, 2016	50		22.14
Granted	32		87.27
Forfeited	—		—
Exercised	(10	)	28.52
Outstanding June 30, 2017	72		$	50.04	$	3,859
Vested and Expected to Vest June 30, 2017	72		$	50.04	$	3,859
Exercisable June 30, 2017	40		$	20.55	$	3,333

The assumptions used in estimating fair value and resulting compensation expenses at the grant dates are as follows:

The following table summarizes non-vested share awards activity:



Share awards	Shares		Weighted Average Grant Date Fair Value
Outstanding July 1, 2014	138		33.56
Granted	12		57.77
Vested	(71	)	35.69
Forfeited	(7	)	46.39
Outstanding July 1, 2015	72		34.28
Granted	22		66.31
Vested	(24	)	43.45
Forfeited	(12	)	23.82
Outstanding July 1, 2016	58		44.95
Granted	17		87.27
Vested	(38	)	37.00
Forfeited	(1	)	65.52
Outstanding June 30, 2017	36		$	73.66

The following table summarizes non-vested unit awards as of June 30, 2017, as well as activity for the year then ended:



Unit awards	Shares		Weighted Average Grant Date Fair Value	Aggregate Intrinsic Value
Outstanding July 1, 2014	709		31.66
Granted	178		53.62
Vested	(277	)	19.69
Forfeited	(111	)	22.74
Outstanding July 1, 2015	499		48.13
Granted	130		75.99
Vested	(99	)	44.09
Forfeited	(101	)	45.89
Outstanding July 1, 2016	429		58.06
Granted	130		77.75
Vested	(136	)	50.12
Forfeited	(37	)	54.30
Outstanding June 30, 2017	386		$67.84	$40,043

The weighted average assumptions used in this model to estimate fair value at the grant dates are as follows: