XML 21 R10.htm IDEA: XBRL DOCUMENT v3.5.0.2

Investments	9 Months Ended
	Sep. 30, 2016
Investments [Abstract]
Investments	NOTE D - Investments Investments consist of certificates of deposit and commercial paper.  Certificates of deposit had original maturities of greater than three months. The commercial paper totaled approximately $10.0 million at December 31, 2015 with original maturities of more than three months but less than six months.  The fair values of the investments approximate their carrying amounts.

X

- Definition

The entire disclosure for investments, including all tables.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 6
-Section 10
-Paragraph (c)
-Subparagraph (1)

+ Details

Name:	invest_InvestmentTextBlock
Namespace Prefix:	invest_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_InvestmentsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration