Share-based Compensation (Tables)

authorized shares under this plan.

A summary of the non-vested share and RSU activity is as follows:



	Non-Vested Shares				Restricted Share Units
	Shares		Weighted-Average Grant Date Fair Value		Units		Weighted- Average Grant Date Fair Value
Outstanding at January 1, 2015	107		$	14.21	199		$	14.67
Granted	149		$	3.74	188		$	3.92
Forfeited	—		$	—	(98	)	$	12.96
Vested	(86	)	$	13.01	(79	)	$	14.53
Outstanding at December 31, 2015	170		$	10.08	210		$	5.91
Expected to vest at December 31, 2015	170		$	10.08	106		$	5.30

The status of PSUs that have been awarded as part of the active LTC Plans is summarized below as of December 31, 2015:



Plan Year	Grant Date Fair Value		Estimated Number of Performance Shares to be Issued	Maximum Number of Performance Shares that Could Potentially be Issued
2014 LTC Plan
RTSR performance condition	$	20.16	—	69
ROIC performance condition	$	14.35	—	69
2013 LTC Plan
RTSR performance condition	$	24.74	—	46
ROIC performance condition	$	16.29	—	46

The grant date fair values of PSU awards containing the RTSR performance condition were estimated using a Monte Carlo simulation with the following assumptions:



	2014			2013
Grant Date Fair Value per Share Unit	$	20.16		$	24.74
Expected volatility	40.8		%	59.5		%
Risk-free interest rate	0.79		%	0.38		%
Expected life (in years)	2.77			2.82
Expected dividend yield	—			—

A summary of stock option activity under all stock-based compensation plans is as follows:



	Shares		Weighted Average Exercise Price		Intrinsic Value		Weighted Average Remaining Contractual Life
Stock options outstanding at January 1, 2015	82		$	13.62
Granted	707		$	3.92
Exercised	—		$	—
Forfeited	(64	)	$	5.03
Expired	(34	)	$	14.77
Stock options outstanding at December 31, 2015	691		$	4.43	$	—	9.2 years
Stock options exercisable at December 31, 2015	40		$	12.79	$	—	2.2 years
Stock options vested or expected to vest as of December 31, 2015	530		$	4.59	$	—	9.0 years

The weighted average grant date fair value of $2.10 per share for the options granted under the 2015 STI Plan was estimated using the Black-Scholes option-pricing model with the following assumptions:



Expected volatility	56.1	%
Risk-free interest rate	1.8	%
Expected life (in years)	6.0
Expected dividend yield	—

The weighted average grant date fair value of $2.05 per share for the options granted under the 2015 LTC Plan was estimated using the Black-Scholes option-pricing model with the following assumptions:



Expected volatility	55.7	%
Risk-free interest rate	1.8	%
Expected life (in years)	5.8
Expected dividend yield	—