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Capitalized Interest | 3 Months Ended
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Mar. 31, 2018
Interest Expense [Abstract] |
Capitalized Interest |
11. | CAPITALIZED INTEREST
The following table sets forth details of interest incurred, capitalized and expensed:
|  | Three months ended March 31 |
In thousands |  | 2018 |  |  | 2017 |
Interest cost incurred |  | $ | 5,591 |  |  | $ | 4,597 |
Interest capitalized |  |  | 396 |  |  |  | 589 |
Interest expense |  | $ | 5,195 |  |  | $ | 4,008 |
Capitalized interest primarily relates to spending for the Airlaid capacity expansion project in 2017 and 2018 and the Specialty Papers’ environmental compliance project in 2017.

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