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Stock-Based Compensation
 3 Months Ended
Mar. 31, 2015
Share-based Compensation [Abstract]  
Stock-Based Compensation
STOCK-BASED COMPENSATION

A summary of stock-based compensation costs related to the 2014 Equity Incentive Plan and expired plans follows (in millions):
 
Successor
 
 
Predecessor
 
Three Months
Ended
March 31, 2015
 
 
Three Months
Ended
March 31, 2014
 
 
 
 
 
Total stock-based compensation costs:
 
 
 
 
Restricted stock and restricted stock units
$
0.1

 
 
$
0.4

Stock options, performance awards and other
—

 
 
—

Expense included primarily in selling, general and administrative expense
$
0.1

 
 
$
0.4

 
 
 
 
 
Total recognized tax benefit
$
—

 
 
$
—





As of March 31, 2015, there was $0.9 million of unrecognized compensation cost, adjusted for estimated forfeitures, related to unvested stock options. Unrecognized compensation cost for unvested restricted stock units was less than $0.1 million as of March 31, 2015. Unrecognized compensation cost is expected to be recognized over a weighted-average period of 3.6 years.

Stock-based compensation cost is measured at the grant date, based on the fair value of the award using the Black-Scholes option pricing model, and is recognized over the vesting period. Stock options vest and become exercisable in equal annual installments over a three or four year period and expire 10 years from the date of grant.

There were 300,000 options granted in the three months ended March 31, 2015. There were no option grants in the three months ended March 31, 2014. Assumptions used to value option grants in the three months ended March 31, 2015 follow:
Risk-free interest rate
1.91%
Expected volatility
75%
Expected option life (years)
6
Weighted-average grant date fair value
$2.89