XML 27 R37.htm IDEA: XBRL DOCUMENT v2.4.0.8
Note F - Income Taxes (Details) (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Income Tax Disclosure [Abstract]        
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 35.00%      
Income Taxes Paid $ 13,200,000 $ 12,000,000 $ 10,300,000  
Deferred Tax Assets, Valuation Allowance 162,000      
Unrecognized Tax Benefits 516,000 421,000 1,423,000 1,298,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 412,000      
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit 56,000      
Tax Credit Carryforward, Amount 343,000      
Income Tax Examination, Penalties and Interest Accrued $ 85,000 $ 91,000 $ 361,000