Bank Note Payable- Additional Information (Detail)	9 Months Ended
	Sep. 30, 2013 USD ($) acre	Jun. 30, 2013 CITIC Bank USD ($)	Sep. 27, 2013 Fuxin Bank USD ($)	Sep. 30, 2013 Xingye bank USD ($)	Jun. 30, 2013 Dalian Fusheng PetroChemical USD ($)	Jun. 30, 2013 Dalian Fusheng PetroChemical CNY	Sep. 27, 2013 Dalian Xingyuan Marine Bunker Co Ltd USD ($)	Sep. 27, 2013 Dalian Xingyuan Marine Bunker Co Ltd CNY	Jun. 30, 2013 Dalian Xingyuan Marine Bunker Co Ltd USD ($)	Jun. 30, 2013 Dalian Xingyuan Marine Bunker Co Ltd CNY	Sep. 30, 2013 Dalian Xifa USD ($)	Sep. 30, 2013 Dalian Xifa CNY
Debt Instrument [Line Items]
Restricted Cash and Cash Equivalents		$ 55,400,000	$ 4,000,000	$ 9,690,000
Pledged assets land use right asset pledged as collateral value	1,637,768
Pledged assets other fixed assets pledged as collateral value	21,100,000
Line of Credit Facility, Maximum Borrowing Capacity					65,100,000	400,000,000	4,000,000	25,000,000	16,200,000	100,000,000	32,300,000	198,300,000
Securities Held As Collateral At FairValue					19,600,000	120,300,000
Pledged assets land use right and other fixed assets pledged as additional collateral value	$ 633,922
Area of land use right pledged	46,142