Benefit Plans (Tables)

Share-based compensation was reflected in the consolidated statements of operations as follows (in thousands):



	2016		2015		2014
Cost of revenues	$	745	$	769	$	751
General and administrative expense	2,110		1,990		1,718
Research and development expense	504		360		436
	$	3,359	$	3,119	$	2,905

The fair value of stock options is estimated on the grant date using the Black-Scholes option valuation model and the following weighted-average assumptions:



	2016		2015		2014
Expected life (in years)	7.0		7.0		7.0
Risk free interest rate	1.5	%	1.7	%	2.3	%
Volatility	80.1	%	80.3	%	81.1	%
Dividend yield	—	%	—	%	—	%

The following table summarizes our stock option activity for the year ended October 31, 2016:



			Weighted- Average Option
Options	Shares		Price
Outstanding at October 31, 2015	257,769		$	57.89
Granted	24,310		$	6.44
Canceled	(35,156	)	$	113.31
Outstanding at October 31, 2016	246,923		$	44.88

The following table summarizes information about stock options outstanding and exercisable at October 31, 2016:



	Options Outstanding				Options Exercisable
		Weighted Average	Weighted Average			Weighted Average
Range of	Number	Remaining	Exercise		Number	Exercise
Exercise Prices	outstanding	Contractual Life	Price		exercisable	Price
$3.24 — $61.20	165,498	6.2	$	18.78	154,421	$	19.49
$61.21 — $119.04	76,205	0.9	$	96.40	76,205	$	96.40
$119.05 — $176.88	5,220	0.9	$	120.28	5,220	$	120.28
	246,923	4.5	$	44.88	235,846	$	46.57

The following table summarizes our RSA and RSU activity for the year ended October 31, 2016:



		Weighted- Average
Restricted Stock Awards and Units	Shares	Price
Outstanding at October 31, 2015	483,570	16.67
Granted	704,153	6.40
Vested	182,738	16.11
Forfeited	14,950	13.21
Outstanding at October 31, 2016	990,035	9.52