20. Stock Benefit Plans and Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2015

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 value using the Black-Scholes option pricing model were as follows:

		Year ended December 31,
		2015			2014			2013
Weighted average expected stock price volatility		72.3	%		74.7	%		66.8	%
Estimated dividend yield		-	%		-	%		-	%
Risk-free interest rate		1.7	%		1.9	%		1.0	%
Expected life of option (in years)		6.3			6.2			6.0
Weighted average grant date fair value per option	$	4.23		$	3.44		$	4.64

Option activity

The following table shows the option activity, described above, during the year ended December 31, 2015 (share and intrinsic values in thousands):

				Weighted Average
			Average	Remaining		Aggregate
			Exercise	Contractual Life		Intrinsic
	Shares		Price	(years)		Value
Options Outstanding at December 31, 2014	4,551	$	5.35
Granted	2,849		6.15
Exercised	(39)		3.92		$	211
Cancelled	(331)		8.34
Expired	-		-
Options outstanding at December 31, 2015	7,030	$	5.54	8.7	$	1,129
Options vested and expected to
vest as of December 31, 2015	6,223	$	5.50	8.7	$	1,035
Options vested and exercisable as of December 31, 2015	1,461	$	5.08	7.8	$	430

Non-vested restricted stock activity

The following table shows the Company's non-vested restricted stock activity during the year ended December 31, 2015 (share and intrinsic values in thousands):

			Weighted Average		Aggregate
			Grant Date Fair		Intrinsic
	Shares		Value		Value
Non-vested restricted stock outstanding at December 31, 2014	140	$	4.52
Granted	-		-
Vested	(64)		6.25	$	562
Forfeited	(20)		3.18
Non-vested restricted stock outstanding at December 31, 2015	56		3.00