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Stockholders' Equity (Tables)

12 Months Ended

Sep. 30, 2021

Equity [Abstract]

Schedule of Stock-Based Compensation Expense

The following table summarizes stock-based compensation expense related to RSUs, stock options, and ESPP shares for the twelve months ended September 30, 2021, 2020, and 2019, which were allocated as follows (amounts shown in thousands):

			2021						2020						2019
Cost of revenue			$	339					$	267					$	207
Selling and marketing			3,399						2,528						2,554
Research and development			3,218						2,802						2,426
General and administrative			4,576						3,954						4,450
Stock-based compensation expense included in expenses			$	11,532					$	9,551					$	9,637

Schedule of Fair Value Calculations for Stock-Based Compensation Awards

The fair value calculations for stock-based compensation awards to employees for the twelve months ended September 30, 2020, and 2019 were based on the following assumptions:

									2020						2019
Risk-free interest rate									1.35% – 1.35%						1.85% – 3.08%
Expected life (years)									5.78						5.43
Expected volatility									48%						57%
Expected dividends									—						—

Schedule of Stock Option Activity

The following table summarizes stock option activity under the Company’s stock option plans during the twelve months ended September 30, 2021, 2020, and 2019:

			Number of Shares						Weighted- Average Exercise Price Per Share						Weighted- Average Remaining Contractual Term (in Years)
Outstanding at September 30, 2018			2,806,364						$	4.75					4.6
Granted			409,368						$	9.59
Exercised			(1,384,647)						$	3.25
Canceled			(144,183)						$	6.62
Outstanding at September 30, 2019			1,686,902						$	7.00					5.4
Granted			92,610						$	9.49
Exercised			(580,861)						$	6.15
Canceled			(36,146)						$	10.76
Outstanding at September 30, 2020			1,162,505						$	7.51					6.1
Granted			—						$	—
Exercised			(329,878)						$	7.63
Canceled			(15,910)						$	9.41
Outstanding at September 30, 2021			816,717						$	7.42					5.8
Vested and Expected to Vest at September 30, 2021			816,717						$	7.42					5.8
Exercisable at September 30, 2021			628,763						$	6.79					5.3

Schedule of RSU Activity

The following table summarizes RSU activity under the Company’s equity plans in the twelve months ended September 30, 2021, 2020, and 2019:

			Number of Shares						Weighted- Average Fair Value Per Share
Outstanding at September 30, 2018			2,580,176						$	6.92
Granted			1,147,976						$	9.67
Settled			(881,420)						$	6.53
Canceled			(494,245)						$	7.70
Outstanding at September 30, 2019			2,352,487						$	8.26
Granted			1,394,869						$	7.39
Settled			(818,665)						$	7.82
Canceled			(266,748)						$	8.26
Outstanding at September 30, 2020			2,661,943						$	7.95
Granted			887,049						$	13.35
Settled			(975,764)						$	7.64
Canceled			(161,961)						$	8.94
Outstanding at September 30, 2021			2,411,267						$	9.99

Schedule of Performance RSU Activity

The following table summarizes Performance RSU activity under the Company’s equity plans in the twelve months ended September 30, 2021, 2020, and 2019:

			Number of Shares						Weighted- Average Fair Value Per Share
Outstanding at September 30, 2018			2,042,817						$	7.66
Granted			—						$	—
Exercised			—						$	—
Canceled			(320,266)						$	7.11
Outstanding at September 30, 2019			1,722,551						$	7.76
Granted			353,556						$	6.06
Exercised			—						$	—
Canceled			(1,722,551)						$	7.76
Outstanding at September 30, 2020			353,556						$	6.06
Granted			284,765						$	11.84
Exercised			(90,345)						$	6.06
Canceled			(19,252)						$	6.06
Outstanding at September 30, 2021			528,724						$	9.17

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Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

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Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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