Note K - Notes Payable and Long-term Debt (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015
Note K - Notes Payable and Long-term Debt (Details) [Line Items]
Notes Payable to Bank, Noncurrent (in Dollars)	10.5us-gaap_NotesPayableToBankNoncurrent
Long-term Debt, Weighted Average Interest Rate	2.30%
Minimum [Member]
Note K - Notes Payable and Long-term Debt (Details) [Line Items]
Debt Instrument, Term	36 months
Maximum [Member]
Note K - Notes Payable and Long-term Debt (Details) [Line Items]
Debt Instrument, Term	60 months

The total amount due within more than 12 month, or the operating cycle if longer, on all notes payable to banks paid on an installment. This can include the amount of any loans from the applicant firm. This does not, however, include any mortgage balances.

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)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 22

-Article 5

Name:	us-gaap_NotesPayableToBankNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant