XML 69 R60.htm IDEA: XBRL DOCUMENT v2.4.1.9

Note 12 - Common Stock and Additional Paid-in Capital (Details) (USD $)	1 Months Ended	0 Months Ended				1 Months Ended		0 Months Ended		12 Months Ended
	Nov. 26, 2014	Aug. 12, 2014	May 07, 2014	Feb. 14, 2014	Aug. 02, 2007	Apr. 30, 2013	Jul. 18, 2007	Aug. 07, 2006	Oct. 05, 2005	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 22, 2010
Stockholders' Equity Note [Abstract]
Common Stock, Shares Authorized										100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Stock Issued During Period, Shares, New Issues		3,500,000us-gaap_StockIssuedDuringPeriodSharesNewIssues	4,476,195us-gaap_StockIssuedDuringPeriodSharesNewIssues	3,398,558us-gaap_StockIssuedDuringPeriodSharesNewIssues	460,105us-gaap_StockIssuedDuringPeriodSharesNewIssues			400,000us-gaap_StockIssuedDuringPeriodSharesNewIssues	8,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
Common Stock, Shares, Outstanding									14,000,000us-gaap_CommonStockSharesOutstanding	42,889,773us-gaap_CommonStockSharesOutstanding	32,127,329us-gaap_CommonStockSharesOutstanding
Sale of Stock, Price Per Share (in Dollars per share)		$ 10.00us-gaap_SaleOfStockPricePerShare	$ 10.50us-gaap_SaleOfStockPricePerShare	$ 9.71us-gaap_SaleOfStockPricePerShare		$ 10.00us-gaap_SaleOfStockPricePerShare	$ 18.00us-gaap_SaleOfStockPricePerShare	$ 12.54us-gaap_SaleOfStockPricePerShare
Shares Public Offering						11,500,000gass_SharesPublicOffering	7,200,000gass_SharesPublicOffering
Common Stock, Par or Stated Value Per Share (in Dollars per share)		$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare			$ 0.01us-gaap_CommonStockParOrStatedValuePerShare	$ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Proceeds from Issuance of Common Stock (in Dollars)					$ 8,281,890us-gaap_ProceedsFromIssuanceOfCommonStock		$ 129,600,000us-gaap_ProceedsFromIssuanceOfCommonStock			$ 112,302,678us-gaap_ProceedsFromIssuanceOfCommonStock	$ 109,119,029us-gaap_ProceedsFromIssuanceOfCommonStock
Proceeds From Issuance of Equity, Net of Issuance Costs (in Dollars)		34,071,501gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	46,294,133gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	31,937,044gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	7,826,386gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	109,119,029gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts	121,932,958gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts
Class of Warrant or Right, Number of Securities Called by Warrants or Rights							1,080,000us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Stock Repurchase Program, Authorized Amount (in Dollars)	10,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1														15,000,000us-gaap_StockRepurchaseProgramAuthorizedAmount1
Stock Repurchased During Period, Shares	843,022us-gaap_StockRepurchasedDuringPeriodShares										0us-gaap_StockRepurchasedDuringPeriodShares	0us-gaap_StockRepurchasedDuringPeriodShares	551,646us-gaap_StockRepurchasedDuringPeriodShares	1,205,229us-gaap_StockRepurchasedDuringPeriodShares
Treasury Stock Acquired, Average Cost Per Share (in Dollars per share)	$ 6.29us-gaap_TreasuryStockAcquiredAverageCostPerShare												$ 4.05us-gaap_TreasuryStockAcquiredAverageCostPerShare	$ 5.21us-gaap_TreasuryStockAcquiredAverageCostPerShare
Proceeds from Issuance or Sale of Equity (in Dollars)		$ 35,000,000us-gaap_ProceedsFromIssuanceOrSaleOfEquity	$ 47,000,047us-gaap_ProceedsFromIssuanceOrSaleOfEquity	$ 32,999,998us-gaap_ProceedsFromIssuanceOrSaleOfEquity		$ 115,000,000us-gaap_ProceedsFromIssuanceOrSaleOfEquity

X

- Definition

No authoritative reference available.

+ References

No definition available.

+ Details

Name:	gass_ProceedsFromIssuanceOfEquityNetOfIssuanceCosts
Namespace Prefix:	gass_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Shares for public offering.

+ References

No definition available.

+ Details

Name:	gass_SharesPublicOffering
Namespace Prefix:	gass_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(2))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Face amount or stated value per share of common stock.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

Name:	us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

Name:	us-gaap_CommonStockSharesAuthorized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 30

-Article 5

+ Details

Name:	us-gaap_CommonStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

-URI http://asc.fasb.org/extlink&oid=6513228



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 14

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

+ Details

Name:	us-gaap_ProceedsFromIssuanceOrSaleOfEquity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

No definition available.

+ Details

Name:	us-gaap_SaleOfStockPricePerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_StockholdersEquityNoteAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of new stock issued during the period.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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

X

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

+ Details

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

X

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

Name:	us-gaap_StockRepurchaseProgramAuthorizedAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

+ Details

Name:	us-gaap_TreasuryStockAcquiredAverageCostPerShare
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration