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Operating Leases
12 Months Ended
Dec. 31, 2011
Operating Leases [Abstract]  
Operating Leases

M.     OPERATING LEASES

The Company leases office, manufacturing, and warehouse facilities and equipment under noncancelable operating leases, many of which contain renewal options ranging from one to five years. Rent expense was approximately $806,000, $771,000, and $836,000 for the years ended December 31, 2011, 2010, and 2009, respectively. Future minimum annual rental payments required under operating leases are as follows:

 

Years ending December 31:   (In thousands)  
2012   $ 391  
2013     180  
2014     28  
2015     28  
2016     28  
Thereafter     44  
    $ 699