3. ASSETS HELD FOR SALE

Our assets held for sale at June 30, 2020, primarily consisted of three 660-ton crawler cranes and a deck barge.  A summary of our assets held for sale at June 30, 2020 and December 31, 2019, is as follows (in thousands):

During the six months ended June 30, 2020 and 2019, we received proceeds of $1.1 million and $0.4 million, respectively, related to the sale of assets that were held for sale. We recognized no gain or loss during the six months ended June 30, 2020, and during the six months ended June 30, 2019, we recognized a gain of $0.4 million on the sale of assets held for sale and recorded impairments of $0.3 million related to other assets that were held for sale. During the three months ended June 30, 2020 and 2019, we received no proceeds from the sales of assets and recognized no gain or loss.