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Property Plant and Equipment, Net
 12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment, Net PROPERTY, PLANT AND EQUIPMENT, NET
Property, plant and equipment, net is summarized as follows:
 At December 31,
 20202019
In thousands  
Land$36,683 $16,319 
Buildings134,995 101,562 
Leasehold improvements15,590 14,904 
Machinery, office furniture and equipment241,027 200,466 
Construction in process11,541 17,748 
Total439,836 350,999 
Less accumulated depreciation(228,984)(210,549)
Property, plant and equipment, net$210,852 $140,450 

Depreciation expense was $28.0 million, $21.3 million and $20.9 million for 2020, 2019 and 2018, respectively.
11. PROPERTY, PLANT AND EQUIPMENT, NET (CONTINUED)

Finance Leases

For the year ended December 31, 2020, $6.7 million of assets included in machinery, office furniture and equipment and construction in process were accounted for as finance leases. At December 31, 2020, the Company had accumulated depreciation of $2.1 million associated with these assets. For the year ended December 31, 2019, $10.9 million of assets included in machinery, office furniture and equipment were accounted for as finance leases. At December 31, 2019, the Company had accumulated depreciation of $2.4 million associated with these assets. Depreciation expense associated with the finance leases (capital leases in 2018) was $0.9 million, $0.9 million and $0.7 million for 2020, 2019 and 2018, respectively.