Stockholders' Equity (Tables)

6 Months Ended

Mar. 31, 2016

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:

	Three Months Ended March 31,				Six Months Ended June 30,
	2016		2015		2016		2015
Cost of Sales	$	10	$	-	$	10	$	-
Sales and marketing		287		192		530		367
Research and development		162		160		342		297
General and administrative		713		519		1,279		1,021
Stock-based compensation expense included in expenses	$	1,172	$	871	$	2,161	$	1,685

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, 2016 and 2015 were based on the following assumptions:

	SixMonths Ended March 31, 2016		SixMonths Ended March 31, 2015
Risk-free interest rate	1.43% – 1.75%		1.29% – 1.66%
Expected life (years)		5.90		5.25
Expected volatility		83%		98%
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, 2016:

	Number of Shares			Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Term (in Years)
Outstanding, September 30, 2015		3,647,705		$	3.70		7.15
Granted		94,500		$	4.43
Exercised		(121,939	)	$	2.57
Cancelled		(44,896	)	$	3.92
Outstanding, March 31, 2016		3,575,370		$	3.76		6.68

RSU Activity

The following table summarizes RSU activity under the Company’s equity plans during the six months ended March 31, 2016:

	Number of Shares			Weighted-Average FairMarket Value Per Share
Outstanding, September 30, 2015		802,917		$	4.49
Granted		1,240,000		$	4.32
Settled		(234,496	)	$	4.71
Cancelled		(23,252	)	$	3.76
Outstanding, March 31, 2016		1,785,169		$	4.35