Note 3 - Stock-Based Compensation (Details) - Unrecognized Compensation Expense of Stock Options and Restricted Stock (USD $) In Thousands, unless otherwise specified	3 Months Ended	15 Months Ended
Mar. 31, 2014 Employee Stock Option [Member]	Mar. 31, 2014 Restricted Stock [Member]
Note 3 - Stock-Based Compensation (Details) - Unrecognized Compensation Expense of Stock Options and Restricted Stock [Line Items]
Unrecognized compensation expense	$ 33	$ 502
Weighted average period over which unrecognized compensation expense is to be recognized (in years)	2 years 109 days	3 years 109 days

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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