Annual report pursuant to Section 13 and 15(d)

Quantitative Information About Level 3 Fair Value Measurements (Detail)

v3.7.0.1
Quantitative Information About Level 3 Fair Value Measurements (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
 [2]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 3.0 [1] $ 8.8
Earn Out Liability    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 2.4  
Valuation Technique Income approach  
Discount rate 19.50%  
Stock Distribution    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair value $ 0.6  
Valuation Technique Monte Carlo simulation  
Volatility 60.00%  
Risk-free interest rate 1.20%  
Dividend yield 0.00%  
[1] Includes $0.9 million to be paid in cash, $0.6 million to be settled in common stock and $1.5 million that may be settled, at our option, in either cash or an equivalent amount of common stock based upon their then-current market value, if certain performance criteria had been met.
[2] Includes $1.8 million to be paid in cash, $6.5 million to be settled in common stock and $0.5 million that may be settled, at our option, in either cash or an equivalent amount of common stock based upon their then-current market value, if certain performance criteria had been met.