Note 13 - Purchase Commitments (Details) (USD $)	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Note 13 - Purchase Commitments (Details) [Line Items]
Purchase Commitment Estimated Penalties	$ 100,000		$ 100,000
Research and Development Arrangement [Member]
Note 13 - Purchase Commitments (Details) [Line Items]
Long-term Purchase Commitment, Amount	$ 800,000	$ 14,000	$ 2,600,000	$ 900,000

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration