Stock-Based Compensation

STOCK OPTION PLANS

The aggregate number of shares authorized for issuance under the Company’s 2005 Stock Incentive Plan, as amended and restated (the “2005 Plan”), is 15,252 shares at September 30, 2018. The 2005 Plan provides for the grant of non-qualified and incentive stock options, restricted stock, stock appreciation rights and deferred stock awards to employees and non-employees. All stock options are granted with an exercise price of not less than 100% of the fair value of the Company’s common stock at the date of grant and the options generally have a term of seven years. There were 780 shares available for future grant under the 2005 Plan at September 30, 2018.

As part of the Company's ongoing annual equity grant program for employees, the Company grants performance-based restricted stock awards to certain executives and employees pursuant to the 2005 Plan. Performance awards vest based on the requisite service period subject to the achievement of specific financial performance targets. Based on the performance targets, some of these awards require graded vesting which results in more rapid expense recognition compared to traditional time-based vesting over the same vesting period. The Company monitors the probability of achieving the performance targets on a quarterly basis and may adjust periodic stock compensation expense accordingly based on its determination of the likelihood for reaching targets. The performance targets include: (i) the achievement of internal performance targets only, and (ii) the achievement of internal performance targets in relation to a peer group of companies.

EMPLOYEE STOCK PURCHASE PLAN

The aggregate number of shares authorized for issuance under the Company’s 1997 Employee Stock Purchase Plan, as amended and restated (“ESPP”), is 1,800 shares. Under the ESPP, rights are granted to purchase shares of common stock at 85% of the lesser of the market value of such shares at either the beginning or the end of each six-month offering period. The ESPP permits employees to purchase common stock through payroll deductions, which may not exceed 10% of an employee’s compensation as defined in the ESPP. There were no shares issued under the ESPP during the three months ended September 30, 2018 and 2017, respectively. Shares available for future purchase under the ESPP totaled 220 at September 30, 2018.

STOCK OPTION AND AWARD ACTIVITY

The following table summarizes activity of the Company’s stock option plans since June 30, 2018:



	Options Outstanding
	Number of Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
Outstanding at June 30, 2018	4	$	5.52	3.13
Granted	—	—
Exercised	—	—
Canceled	—	—
Outstanding at September 30, 2018	4	$	5.52	2.88

The following table summarizes the status of the Company’s non-vested restricted stock awards since June 30, 2018:



	Non-vested Restricted Stock Awards
	Number of Shares		Weighted Average Grant Date Fair Value
Outstanding at June 30, 2018	1,135		$	27.26
Granted	343		49.33
Vested	(382	)	49.31
Forfeited	(47	)	33.03
Outstanding at September 30, 2018	1,049		$	38.61

STOCK-BASED COMPENSATION EXPENSE

The Company recognizes expense for its share-based payment plans in the Consolidated Statements of Operations for the three months ended September 30, 2018 and 2017 in accordance with ASC 718, Compensation - Stock Compensation ("ASC 718"). The Company had $224 and $148 of capitalized stock-based compensation expense on the Consolidated Balance Sheets as of September 30, 2018 and 2017, respectively. Under the fair value recognition provisions of ASC 718, stock-based compensation cost is measured at the grant date based on the value of the award and is recognized as expense over the service period, net of estimated forfeitures. The following table presents share-based compensation expenses included in the Company’s Consolidated Statements of Operations:



	Three Months Ended September 30,
	2018			2017
Cost of revenues	$	252		$	148
Selling, general and administrative	3,884			3,976
Research and development	543			497
Stock-based compensation expense before tax	4,679			4,621
Income taxes	(1,281		)	(1,763		)
Stock-based compensation expense, net of income taxes	$	3,398		$	2,858