17. Stock Benefit Plans and Stock-Based CompensationPlans (Tables)

12 Months Ended

Dec. 31, 2016

Stock Benefit Plans And Stock-Based Compensation Tables

Weighted average fair value of stock options granted

The weighted average fair value of stock options granted during the periods and the assumptions used to estimate those values using the Black-Scholes option pricing model were as follows:

		Year ended December 31,
		2016			2015
Weighted average expected
stock price volatility		77.9	%		72.3	%
Estimated dividend yield		-	%		-	%
Risk-free interest rate		1.4	%		1.7	%
Expected life of option (in years)		6.1			6.3
Weighted average grant date
fair value per option	$	7.63		$	42.30

Option activity

The following table shows the stock option activity, described above, during the year ended December 31, 2016 (share and intrinsic values in thousands):

				Weighted Average
			Average	Remaining		Aggregate
			Exercise	Contractual Life		Intrinsic
	Shares		Price	(years)		Value
Options Outstanding at December 31, 2015	703	$	55.42
Granted	632		11.73
Exercised	-		-		$	-
Cancelled	(685)		43.15
Expired	-		-
Options outstanding at December 31, 2016	650	$	25.85	9.0	$	-
Options vested and expected to
vest as of December 31, 2016	491	$	30.80	8.9	$	-
Options vested and exercisable as of December 31, 2016	79	$	70.34	6.9	$	-

Non-vested restricted stock activity

The following table shows the Company's non-vested restricted stock activity during the year ended December 31, 2016 (share and intrinsic values in thousands):

			Weighted Average		Aggregate
			Grant Date Fair		Intrinsic
	Shares		Value		Value
Non-vested restricted stock outstanding at December 31, 2015	6	$	30.00
Granted	197		3.36
Vested	(6)		30.00	$	63
Forfeited	-		-
Non-vested restricted stock outstanding at December 31, 2016	197	$	3.36