Note 3 - Fair Value Measurements (Details) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Note 3 - Fair Value Measurements (Details) [Line Items]
Liabilities, Fair Value Disclosure, Recurring	$ 0	$ 0
Certificates of Deposit [Member] \| Fair Value, Inputs, Level 2 [Member]
Note 3 - Fair Value Measurements (Details) [Line Items]
Assets, Fair Value Disclosure	2,000,000	2,000,000
Certificates of Deposit [Member]
Note 3 - Fair Value Measurements (Details) [Line Items]
Assets, Fair Value Disclosure	$ 2,000,000	$ 2,000,000

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant