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Other Current Liabilities (Tables)
 6 Months Ended
Jun. 30, 2016
Other Liabilities Disclosure [Abstract]  
Other Current Liabilities
Other current liabilities consisted of the following at June 30, 2016 and December 31, 2015:
In thousands
2016
 
2015
Amounts received in advance of revenue recognition
$
4,476

 
$
23,545

Other
821

 
779

Total
$
5,297

 
$
24,324