Share-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2016

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

Schedule of Share-based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

We use the Black-Scholes-Merton option pricing model to estimate the fair value of stock option awards with the following assumptions for stock option awards issued during the period of April 23, 2016 through December 31, 2016 (successor):

	Stock Option Valuation Assumptions
Expected Dividend	—
Expected volatility	69.3		%
Risk-free interest rate	1.42		%
Expected life of stock option awards (in years)	4
Weighted average grant-date fair value	$	12.64

Stock option activity

The following table represents stock option award activity for the year ended December 31, 2016:

	2016
	Shares		Wtd. Avg. Exer. Price
Options outstanding, beginning of period (Predecessor)	1,330,390		$	34.02
Options canceled/vested upon emergence from bankruptcy	(1,330,390	)	$	—
Options outstanding, as of April 22, 2016 (Successor)	—		$	—
Options granted	105,811		$	23.25
Options canceled	—		$	—
Options exercised	—		$	—
Options outstanding, end of period (Successor)	105,811		$	23.25
Options exercisable, end of period (Successor)	60,847		$	23.25

Stock options outstanding

The following table summarizes information about stock option awards outstanding at December 31, 2016:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Number Outstanding at 12/31/16	Wtd. Avg. Remaining Contractual Life	Wtd. Avg. Exercise Price		Number Exercisable at 12/31/16	Wtd. Avg. Exercise Price
$1.00 to $25.00	105,811	3.2	$	23.25	60,874	$	23.25

Schedule of RSA Activity

The following table represents restricted stock award activity for the year ended December 31, 2016:

	2016
	Shares			Wtd. Avg. Grant Price
Restricted awards outstanding, beginning of period (Predecessor)	1,487,076			$	8.94
Restricted awards canceled/vested upon emergence from bankruptcy	(1,487,076		)	$	8.94
Restricted awards, as of April 22, 2016 (Successor)	$	—		$	—
Restricted shares outstanding, end of period (Successor)	—			$	—

Schedule of Nonvested Restricted Stock Units Activity

The following table represents restricted stock unit activity for the year ended December 31, 2016:

	Shares		Wtd. Avg. Grant Price
Restricted units outstanding, beginning of period (Predecessor)	591,400		$	9.20
Restricted units canceled/vested upon emergence from bankruptcy	(591,400	)	$	9.20
Restricted units, as of April 22, 2016 (Successor)	—		$	—
Restricted stock units granted	254,905		$	23.25
Restricted stock units canceled	—		$	—
Restricted stock units vested	76,058		$	23.25
Restricted stock units outstanding, end of period (Successor)	178,847		$	23.25