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Note L - Commitments and Contingent Liabilities (Details Textual)	Dec. 31, 2016	Dec. 31, 2015	Mar. 22, 2007
Debt Instrument, Interest Rate, Stated Percentage	2.64%	2.19%	6.58%
Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	1.25%
Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	4.09%
Fixed Rate Commitments [Member] | Minimum [Member]
Debt Instrument, Interest Rate, Stated Percentage	3.75%
Fixed Rate Commitments [Member] | Maximum [Member]
Debt Instrument, Interest Rate, Stated Percentage	6.25%

X

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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- Details

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