XML 52 R65.htm IDEA: XBRL DOCUMENT v2.4.0.6
Defined Benefit Plans - Net Periodic Benefit Cost (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Defined SERP [Member]
        
Net Periodic Benefit Cost        
Service cost $ 39 $ 40 $ 77 $ 80
Interest cost 51 56 101 111
Amortization of gains (losses) 11   22  
Amortization of prior service cost 34 33 67 66
Net periodic cost 134 129 267 257
Directors Plan [Member]
        
Net Periodic Benefit Cost        
Service cost 6 7 13 14
Interest cost 10 11 20 22
Amortization of prior service cost 23 22 45 45
Net periodic cost $ 39 $ 40 $ 77 $ 80