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Financial instruments (Tables)
 12 Months Ended
Dec. 31, 2015
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, 2015 and 2014:
 
 
 
December 31, 2015
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Recurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Restricted cash
 
$
428,203
 
$
-
 
$
-
 
$
428,203
 
Certificate of deposit
 
 
-
 
 
5,637,538
 
 
-
 
 
5,637,538
 
Total recurring
 
$
428,203
 
$
5,637,538
 
$
-
 
$
6,065,741
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nonrecurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment in OC-BVI
 
$
-
 
$
-
 
$
4,548,271
 
$
4,548,271
 
 
 
 
December 31, 2014
 
 
 
Level 1
 
Level 2
 
Level 3
 
Total
 
Assets:
 
 
 
 
 
 
 
 
 
 
 
 
 
Recurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Restricted cash
 
$
456,083
 
$
-
 
$
-
 
$
456,083
 
Certificate of deposit
 
 
-
 
 
5,000,000
 
 
-
 
 
5,000,000
 
Total recurring
 
$
456,083
 
$
5,000,000
 
$
-
 
$
5,456,083
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nonrecurring
 
 
 
 
 
 
 
 
 
 
 
 
 
Investment in OC-BVI
 
$
-
 
$
-
 
$
5,208,603
 
$
5,208,603
 
Fair Value Measurements, Nonrecurring [Table Text Block]
A reconciliation of the beginning and ending balances for Level 3 investments for the year ended December 31, 2015:
 
Balance as of December 31, 2014
 
$
5,208,603
 
Profit sharing and equity from earnings of OC-BVI
 
 
399,668
 
Distributions received from OC-BVI
 
 
-
 
Impairment of investment in OC-BVI (See Note 8)
 
 
(1,060,000)
 
Balance as of December 31, 2015
 
$
4,548,271