Stock-Based Compensation

3 Months Ended

Dec. 31, 2017

Note 9 - Stock-Based Compensation

We recorded non-cash compensation expense related to stock-based awards for the three month periods ended December 31, 2017 and 2016 as follows (in thousands):


	Three Months Ended
	December 31,
	2017		2016
Cost of sales	$	156	$	175
Selling, general and administrative		1,425		2,139
	$	1,581	$	2,314

As of December 31, 2017, there was $48.7 million of unrecognized compensation cost related to unvested RSUs. Based upon the expected forfeitures and the expected vesting of performance based RSUs, the aggregate fair value of RSUs expected to ultimately vest is $26.6 million. This amount is expected to be recognized over a weighted-average period of 1.7 years.

We are required to estimate forfeitures at the time of grant and revise those estimates in subsequent periods on a cumulative basis in the period the estimated forfeiture rate changes for all stock-based awards when significant events occur. We consider our historical experience with employee turnover as the basis to arrive at our estimated forfeiture rate. The forfeiture rate was estimated to be 12.5% per year as of December 31, 2017. To the extent the actual forfeiture rate is different from what we have estimated, stock-based compensation related to these awards will be different from our expectations.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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