Note 11 - Derivatives and Fair Value Disclosures (Detail) (USD $)	9 Months Ended
Sep. 30, 2012	Sep. 30, 2011
Derivative, Notional Amount (in Dollars)	$ 126,937,757
Derivative, Reference Rate LIBOR	0.50%
Derivative Instruments, Income Statement Location of Gain (Loss) Reclassified from Accumulated OCI	$11,830	$369,045
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months (in Dollars)	$ 43,233
Minimum [Member]
Interest Rate Swap, Fixed Rate	2.77%
Maximum [Member]
Interest Rate Swap, Fixed Rate	4.73%

The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=7668309&loc=d3e80748-113994

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 133

-Paragraph 45

-Subparagraph b(2)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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