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Share-Based Compensation
3 Months Ended
Mar. 31, 2012
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Disclosure of Compensation Related Costs, Share-based Payments [Text Block]
Share-Based Compensation

MRV records share-based compensation expense in accordance with ASC Topic 718 Compensation - Stock Compensation. The following table summarizes the impact on MRV's results of operations of recording share-based compensation for the three months ended March 31, 2012 and 2011 (in thousands):

 
Three months ended
 
March 31,
 
2012
 
2011
Cost of goods sold
$
14

 
$
11

Product development and engineering
11

 
39

Selling, general and administrative
198

 
704

Total share-based compensation expense (1)
$
223

 
$
754

 
 
 
 

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

The Company did not grant stock options during the quarter ended March 31, 2012. The fair value of restricted stock awards granted during the three months ended March 31, 2012 was $0.97 per share. There were 95,000 options granted during the three months ended March 31, 2011. As of March 31, 2012, the total unrecorded deferred share-based compensation balance for unvested securities, net of expected forfeitures, was $2.4 million, which is expected to be amortized over a weighted-average period of 2.2 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 expects future volatility to approximate historical volatility. The following weighted average assumptions were used for estimating the fair value of options granted during the three months ended March 31, 2012 and March 31, 2011:

Three months ended March 31:
2012
 
2011
Risk-free interest rate
0.5
%
 
2.4
%
Dividend yield

 

Volatility
79.7
%
 
89.7
%
Expected life (in years)
3.0

 
6.3