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Summary of significant accounting policies (Tables)
 9 Months Ended
Sep. 30, 2015
Accounting Policies [Abstract]  
Schedule Of Property, Plant And Equipment Estimated Useful Lives [Table Text Block]
Depreciation is computed on a straight-line basis, based on the following estimated useful lives:
 
Buildings
 
20 years
Machinery and equipment
 
10 years
Furniture and fixtures
 
10 years
Office equipment and software
 
5 years
Vehicles
 
5 years
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
The following table sets forth the computation of the basic and diluted earnings per share for the three- and nine-month periods ended September 30, 2015 and 2014:
 
 
 
(in thousands except per share amounts)
 
 
 
Three months ended September 30,
 
Nine months ended September 30,
 
 
 
2015
 
2014
 
2015
 
2014
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Net (Loss) Income
 
$
(1,938)
 
$
13,120
 
$
(11,076)
 
$
(2,911)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Denominator
 
 
 
 
 
 
 
 
 
 
 
 
 
Denominator for basic earnings per ordinary share - weighted average shares outstanding
 
 
25,426,250
 
 
24,364,014
 
 
25,127,179
 
 
24,306,288
 
Effect of dilutive warrants, unit purchase options and contingently issuable shares
 
 
5,399,081
 
 
4,273,152
 
 
4,607,484
 
 
3,954,980
 
Denominator for diluted earnings per ordinary share - weighted average shares outstanding
 
 
30,825,331
 
 
28,637,166
 
 
29,734,663
 
 
28,261,268
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic earnings per ordinary share
 
$
(0.08)
 
$
0.54
 
$
(0.44)
 
$
(0.12)
 
Diluted earnings per ordinary share
 
$
(0.08)
 
$
0.46
 
$
(0.44)
 
$
(0.12)