Benefit Plans (Tables)

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



	2015		2014		2013
Cost of revenues	$	769	$	751	$	584
General and administrative expense	1,990		1,718		1,325
Research and development expense	360		436		308
	$	3,119	$	2,905	$	2,217

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:



	2015		2014		2013
Expected life (in years)	7.0		7.0		7.0
Risk free interest rate	1.7	%	2.3	%	1.2	%
Volatility	80.3	%	81.1	%	76.5	%
Dividends yield	—	%	—	%	—	%

The following table summarizes our stock option activity for the year ended October 31, 2015:



			Weighted- Average Option
Options	Shares		Price
Outstanding at October 31, 2014	252,340		$	77.04
Granted	31,106		$	13.24
Canceled	(25,677	)	$	102.22
Outstanding at October 31, 2015	257,769		$	57.89

The following table summarizes information about stock options outstanding and exercisable at October 31, 2015:



	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	144,495	6.7	$	20.64	128,392	$	21.72
$61.21 — $119.04	81,546	1.8	$	96.85	81,546	$	96.85
$119.05 — $176.88	31,728	0.6	$	127.42	31,728	$	127.42
	257,769	4.4	$	57.89	241,666	$	60.95

The following table summarizes our RSA and RSU activity for the year ended October 31, 2015:



			Weighted- Average
Restricted Stock Awards and Units	Shares		Price
Outstanding at October 31, 2014	393,673		17.88
Granted	253,902		15.26
Vested	(148,920	)	17.51
Forfeited	(15,085	)	17.31
Outstanding at October 31, 2015	483,570		16.67