Quarterly report pursuant to sections 13 or 15(d)

SEGMENT INFORMATION (Details)

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SEGMENT INFORMATION (Details) (USD $)
 6 Months Ended 12 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
China Dredging Group Co Ltd [Member]
Jun. 30, 2012
China Dredging Group Co Ltd [Member]
Jun. 30, 2013
China Dredging Group Co Ltd [Member]
Jun. 30, 2012
China Dredging Group Co Ltd [Member]
Contract revenue, including revenue from customers under control of a common parent company of $21,263,194 and $33,852,176 for the three months ended June 30, 2013 and 2012, respectively; $24,217,505 and$69,873,999 for the six months end June 30 2013 and 2012, respectively $ 50,781,143 $ 200,876,906 $ 50,547,631 $ 59,594,550 $ 77,286,702 $ 119,094,081
Cost of contract revenue, including depreciation of $1,929,569 and $1,836,678 for the three months ended June 30, 2013 and 2012 respectively; $3,817,166 and $3,683,238 for the six months ended June 30 2013 and 2012, respectively     (25,218,221) (27,573,111) (41,240,717) (55,595,229)
Contract Revenue Net Of Cost     $ 25,329,410 $ 32,021,439 $ 36,045,985 $ 63,498,852