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Financial instruments (Tables)
 12 Months Ended
Dec. 31, 2013
Investments, All Other Investments [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]
The following table presents the Company’s fair value hierarchy for assets and liabilities measured at fair value as of December 31, 2013 and 2012:
 
 
 
December 31, 2013
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Recurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Marketable securities
 
$
8,587,475
 
$
-
 
$
-
 
$
8,587,475
 
Nonrecurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment in affiliate
 
$
-
 
$
-
 
$
6,623,448
 
$
6,623,448
 
 
 
 
December 31, 2012
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Recurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Marketable securities
 
$
8,570,338
 
$
-
 
$
-
 
$
8,570,338
 
Nonrecurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment in affiliate
 
$
-
 
$
-
 
$
6,925,346
 
$
6,925,346
 
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]
A reconciliation of the beginning and ending balances for Level 3 investments for the year ended December 31, 2013:
 
Balance as of December 31, 2012
 
$
6,925,346
 
Profit sharing and equity from earnings of OC-BVI
 
 
1,337,352
 
Distribution of earnings from OC-BVI
 
 
(1,439,250)
 
Impairment of Investment in OC-BVI (See Note 8)
 
 
(200,000)
 
Balance as of December 31, 2013
 
$
6,623,448