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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2019
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment at December 31, 2019 and 2018 are summarized as follows:
 20192018
Land$11,588  $7,965  
Building79,261  67,702  
Equipment237,898  213,909  
Construction in progress14,594  14,750  
 343,341  304,326  
Less: Accumulated depreciation126,482  113,407  
Property, plant and equipment, net$216,859  $190,919  

Geographic Area Data - Long-Lived Assets (excluding intangible assets):
 20192018
United States$178,895  $167,410  
Foreign Countries37,964  23,509  
Total216,859  190,919  
Depreciation expense was $19,791, $18,998 and $17,121 for the years ended December 31, 2019, 2018 and 2017, respectively.

For the year ended December 31, 2019, we incurred impairment charges of $1,026 in connection with a restructuring in the HNH segment.