Note 19 - Subsequent Events (Details Textual) - Subsequent Event [Member] - 2011 Equity Incentive Plan [Member] - Restricted Stock Units (RSUs) [Member]	Mar. 31, 2017 USD ($) shares
Share Based Compensation Arrangement by Share Based Payment Award Increase In Shares Available for Grant	85,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	85,000
Share-based Compensation Arrangement By Share-based Payment Award, Other Than Options, Grants In Period, Fair Value \| $	$ 7.20

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration