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Share-Based Compensation
9 Months Ended
Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-Based Compensation
Share-Based Compensation

MRV records share-based compensation expense at fair value. The following table summarizes the impact on MRV's results of operations of recording share-based compensation for the three and nine months ended September 30, 2014, and 2013 (in thousands):

 
Three months ended
 
Nine months ended
 
September 30,
 
September 30,
 
2014
 
2013
 
2014
 
2013
Cost of goods sold
$
34

 
$
27

 
$
87

 
$
70

Product development and engineering
49

 
21

 
122

 
46

Selling, general and administrative
148

 
161

 
497

 
395

Total share-based compensation expense (1)
$
231

 
$
209

 
$
706

 
$
511

 
 
 
 
 
 
 
 

(1)
Income tax benefits realized from stock option exercises and similar awards were immaterial in both periods.

The Company granted 15,000 stock options during the three months ended September 30, 2014, and the related fair value was $6.06 per option. The Company granted 5,000 restricted shares during the three months ended September 30, 2014, and the related fair value was $13.46 per share. The Company granted no stock options and no restricted shares during the three months ended September 30, 2013. The Company granted 188,722 stock options during the nine months ended September 30, 2014 and the related weighted average fair value was $7.07 per share. The average fair value of 90,907 restricted shares granted during the nine months ended September 30, 2014, was $14.35 per share. The Company granted 80,242 stock options during the nine months ended September 30, 2013, and the related weighted average fair value was $4.89 per share. The average fair value of 91,388 restricted shares granted during the nine months ended September 30, 2013, was $9.98 per share. As of September 30, 2014, the total unrecognized share-based compensation balance for unvested securities, net of expected forfeitures, was $1.8 million, which is expected to be amortized over a weighted-average period of 2.3 years.

Valuation Assumptions

MRV uses the Black-Scholes option pricing model to estimate the fair value of stock option awards or related modifications. The Black-Scholes model requires the use of subjective and complex assumptions including the option's expected life and the underlying stock price volatility. MRV bases volatility on the Company's historical quoted prices and peer company data. The following weighted average assumptions were used for estimating the fair value of options granted during the nine months ended September 30, 2014 and the options modified during the nine months ended September 30, 2013, respectively.
 
 
 
Nine months ended September 30,
2014
2013
Risk-free interest rate
2.0
%
1.2
%
Dividend yield (1)


Volatility
51
%
52
%
Expected life (in years)
5.9

5.7

 
 
 


(1)
As the Company does not pay a dividend on a regular basis, and dividends paid in the past have been special in nature, a dividend rate of zero was used.