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Note 6 - Vessels, Net and Vessels Held for Sale (Detail) - Vessels, Net and Vessels Held for Sale (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Balance, December 31	$ 729,452,091	$ 702,016,175
Balance, December 31	(115,619,118)	(98,951,164)
Balance, December 31	613,832,973	603,065,011
Acquisitions (transfer from Advances for Vessels under Construction)	65,661,599	69,906,578
Held for sale		(1,310,488)
Held for sale		389,203
Held for sale		(921,285)
Disposals	(18,811,000)	(41,160,174)
Disposals	2,727,787	10,504,963
Disposals	(16,083,213)	(30,655,211)
Depreciation for the year	(28,776,688)	(27,562,120)
Balance, December 31	776,302,690	729,452,091
Balance, December 31	(141,668,019)	(115,619,118)
Balance, December 31	$ 634,634,671	$ 613,832,973

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- Definition

No authoritative reference available.

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Property Plant And Equipment Disposals Net

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- Definition

The cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land) that has been recognized in the income statement.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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Cumulative amount of depreciation, depletion and amortization (related to property, plant and equipment, but not including land or leased assets).

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The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of sales or disposals of property, plant and equipment during the period.

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Property, plant and equipment that is held for sale apart from normal operations and anticipated to be sold in less than one year.

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Acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Divestiture of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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