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Stockholders' Equity (Tables)

6 Months Ended

Mar. 31, 2017

Equity [Abstract]

Stock-Based Compensation Expense Related to Stock Options and RSUs

The following table summarizes stock-based compensation expense related to stock options and RSUs, which was allocated as follows (amounts shown in thousands):

	Three Months Ended March 31,								Six Months Ended March 31,
	2017				2016				2017				2016
Cost of revenue	$	47			$	10			$	87			$	10
Sales and marketing	360				287				674				530
Research and development	239				162				452				342
General and administrative	577				713				1,095				1,279
Stock-based compensation expense included in expenses	$	1,223			$	1,172			$	2,308			$	2,161

Fair Value Calculations for Stock-Based Compensation Awards

 The fair value calculations for stock-based compensation awards to employees for the six months ended March 31, 2017 and 2016 were based on the following assumptions:

	Six Months Ended March 31, 2017		Six Months Ended March 31, 2016
Risk-free interest rate	1.68% – 1.92%		1.43% – 1.75%
Expected life (years)	5.32		5.90
Expected volatility	78%		83%
Expected dividends	None		None

Stock Option Activity

The following table summarizes stock option activity under the Company’s equity plans during the six months ended March 31, 2017:

	Number of Shares			Weighted-Average Exercise Price				Weighted-Average Remaining Contractual Term (in Years)
Outstanding, September 30, 2016	3,015,374			$	3.95			6.4
Granted	107,800			$	6.13
Exercised	(10,291	)		$	2.85
Canceled	(32,501	)		$	4.29
Outstanding, March 31, 2017	3,080,382			$	4.02			6.0

RSU Activity

The following table summarizes RSU activity under the Company’s equity plans during the six months ended March 31, 2017:

	Number of Shares			Weighted-Average Fair Market Value Per Share
Outstanding, September 30, 2016	2,046,169			$	4.90
Granted	917,785			$	5.77
Settled	(532,333	)		$	4.62
Canceled	(75,506	)		$	5.15
Outstanding, March 31, 2017	2,356,115			$	5.11

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

+ References

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Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year.

+ References

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-Publisher FASB
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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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-Publisher FASB
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