XML 27 R16.htm IDEA: XBRL DOCUMENT v3.3.1.900
Note D - Debt (Details Textual) - Revolving Credit Facility [Member] - JPMorgan Chase Bank N.A. [Member]
May. 08, 2015
USD ($)
Dec. 31, 2015
USD ($)
Maximum [Member]    
Line of Credit Facility, Covenant Terms, Minimum Tangible Net Worth $ 57,000,000  
Line of Credit Facility, Covenant Terms, Net Income Minimum $ 1  
Minimum [Member]    
Ratio of Indebtedness to Net Capital 1  
Line of Credit Facility, Initiation Date May 08, 2015  
Line of Credit Facility, Expiration Date Apr. 30, 2016  
Long-term Line of Credit   $ 0
Line of Credit Facility, Maximum Borrowing Capacity $ 5,000,000