Note 8 - Fair Value Measurements (Details) (USD $)	Mar. 31, 2014
Fair Value Disclosures [Abstract]
Liabilities, Fair Value Disclosure, Nonrecurring	$ 0

Aggregation of the liabilities reported on the balance sheet measured at fair value on a nonrecurring basis by the entity.

No definition available.

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