Note 3 – Property, Plant and Equipment

The components of property and equipment are as follows (in thousands):

Depreciation expense incurred for the nine months ended September 30, 2020 and 2019 was $253,000 and $302,000, respectively. During the nine months ended September 30, 2020, we wrote off fully depreciated assets and accumulated depreciation totaling $38,000.

On July 10, 2020, we entered into an Agreement of Sale and Purchase (the “Sale Agreement”) with Lenape Valley Foundation (the “Purchaser”), pursuant to which we agreed to sell our corporate headquarters building located in Doylestown, Pennsylvania to the Purchaser for $2.2 million, with $50,000 placed into an interest-bearing escrow account at the time of signing, and the remainder payable to the Company in cash by wire transfer at the closing of the transaction. The closing of the transaction was subject to the Purchaser’s due diligence investigation and other customary closing conditions. The Sale Agreement contains customary representations, warranties, and covenants by, among, and for the benefit of the parties.

As a result of this pending sale, the Doylestown building and land were classified as assets held for sale on our condensed consolidated balance sheet at September 30, 2020. We reported the assets held for sale at the lower of the carrying amount, less estimated costs to sell. On November 13, 2020, we closed on this sale of our corporate headquarters (see Note 12).