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Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2012
Accounting Policies [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions
The Company calculated the fair value for options with the following weighted-average assumptions for 2012, 2011, and 2010:

 
 
December 31,
 
 
2012

 
2011

 
2010

 
 
 
 
 
 
 
Risk-free interest rate
 
1.44
%
 
2.64
%
 
3.04
%
Dividend yield
 
1.2
%
 
1.2
%
 
1.2
%
Volatility factors
 
46.7
%
 
46.7
%
 
44.3
%
Weighted-average expected life
 
8.0 years

 
8.0 years

 
8.0 years