XML 42 R31.htm IDEA: XBRL DOCUMENT v3.7.0.1
Note C - Marketable Equity Securities (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Other than Temporary Impairment Losses, Investments, Available-for-sale Securities $ 0 $ 235,000  
Accumulated Other Comprehensive Income (Loss), Net of Tax 6,554,000   $ 7,476,000
Available-for-Sale Securities Net Unrealized Holding Gain (Loss), Net of Tax 922,000   2,166,000
Investment Income, Dividend 221,000 259,000  
Marketable Securities, Reclassification 0 $ 0  
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value 2,127,000   1,340,000
Available-for-sale Equity Securities, Gross Unrealized Loss 121,000   109,000
Trading Securities Pledged as Collateral 7,768,000   10,358,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value 0   0
Available-for-sale Securities [Member]      
Accumulated Other Comprehensive Income (Loss), Net of Tax $ 6,554,000   $ 7,476,000