Annual report pursuant to Section 13 and 15(d)

Related Person Transactions (Details)

v2.4.0.6
Related Person Transactions (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Related Party Transaction [Line Items]      
Rental service charge $ 18,000 $ 18,000 $ 17,000
Purchase of maintenance and other services 239,000 278,000 242,000
Payment for leased equipment     86,000
Net death benefits due to the company 8,900,000    
Endorsed value 2,000,000    
Split Dollar Life Insurance Policies [Member]
     
Related Party Transaction [Line Items]      
Cash surrender value $ 6,800,000 $ 6,600,000