Stock Options (Tables)

9 Months Ended

Sep. 30, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Fair Value Assumptions on Stock Options

The fair value of stock option awards was estimated using the Black-Scholes option pricing model with the following assumptions and weighted-average fair values:

	Nine Months Ended September 30,
	2016			2015
Weighted-average fair value of grant	$	4.53		$	9.00
Risk-free interest rate	1.29		%	1.28		%
Expected volatility	51.30		%	45.46		%
Expected life of options in years	4.90			4.92
Expected dividend yield	—			—

Summary of Stock Option Activity

A summary of stock option activity for the nine months ended September 30, 2016 follows (shares in thousands):

Options	Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at December 31, 2015	2,723		$	27.88
Granted	11		10.85
Exercised	—		—
Forfeited and expired	(605	)	36.26
Outstanding at September 30, 2016	2,129		25.41		2.53	$	—
Expected to vest at September 30, 2016	624		25.97		3.95	—
Exercisable at September 30, 2016	1,486		25.21		1.91	—

Summary of Restricted Stock Unit Activity

A summary of restricted stock unit activity for the nine months ended September 30, 2016 follows (shares in thousands):

	Restricted Stock Units		Weighted- Average Grant-Date Fair Value
Outstanding at December 31, 2015	469		$	23.57
Granted	1,285		9.84
Vested	(184	)	18.84
Forfeited and expired	(62	)	17.63
Outstanding at September 30, 2016	1,508		$	12.74