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Accumulated Other Comprehensive Income (Tables)
 12 Months Ended
Dec. 31, 2017
Statement of Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
The following table summarizes the change in accumulated other comprehensive income (loss) for the years ended December 31, 2017, 2016, and 2015:
 
 
Year ended December 31,
In thousands
 
2017
 
2016
 
2015
Beginning accumulated other comprehensive loss, net of tax
 
$
(260
)
 
$
(3,354
)
 
$
(385
)
Foreign currency translation adjustments
 
567

 
3,094

 
(2,969
)
Income taxes (1)
 
—

 
—

 
—

Other comprehensive income (loss), net of tax
 
567

 
3,094

 
(2,969
)
Ending accumulated other comprehensive income (loss), net of tax
 
$
307

 
$
(260
)
 
$
(3,354
)
(1)
A valuation allowance has been recognized against all deferred tax assets associated with losses generated by the Company’s Canadian operations, thereby resulting in no income taxes on other comprehensive income (loss).