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Fair value measurements (Details 1) (USD $) | 6 Months Ended
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Jun. 30, 2014
Fair Value Inputs, Equity, Quantitative Information [Line Items] |
Balance, Beginning | $ 6,623,448
Profit sharing and equity from earnings of OC-BVI | 190,954
Distribution of earnings from OC-BVI | (727,200)
Balance, Ending | $ 6,087,202

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- Definition Value of the investment at close of period. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph Column E -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611322-123010 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph 2 -Article 12 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 14 -Paragraph 3 -Article 12 + Details
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