Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2017

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

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

The compensation cost related to stock option awards is based on the grant date fair value and is typically expensed over the vesting period (generally one to five years). We use the Black-Scholes-Merton option pricing model to estimate the fair value of stock option awards with the following weighted average assumptions for stock option awards issued during the three months ended March 31, 2017 (successor):

	Stock Option Valuation Assumptions
Expected dividend	—
Expected volatility	70.2		%
Risk-free interest rate	1.98		%
Expected life of stock option awards (in years)	5.7 years
Grant-date fair value	$	17.58

Stock option activity

The following tables represents stock option award activity for the three months ended March 31, 2017 (successor):

	Shares	Wtd. Avg. Exer. Price
Options outstanding, beginning of period (successor)	105,811	$	23.25
Options granted	370,062	$	28.62
Options canceled	—	$	—
Options exercised	—	$	—
Options outstanding, end of period (successor)	475,873	$	27.43
Options exercisable, end of period (successor)	60,847	$	23.25

Restricted stock activity

The following table represents restricted stock unit award activity for the three months ended March 31, 2017 (successor):

	Shares		Grant Date Price
Restricted stock units outstanding, beginning of period (successor)	178,847		$	23.25
Restricted stock units granted	287,257		$	29.07
Restricted stock units canceled	—		$	—
Restricted stock units vested	(30,500	)	$	23.25
Restricted stock units outstanding, end of period (successor)	435,604		$	27.09