Selling, general and administrative expenses decreased by approximately $0.1 million for the three months ended June 30, 2020 as compared to the three months ended June 30, 2019. The decrease was primarily due to a slowdown of business activity overall due to COVID-19, partially offset by the inclusion of Shore Fire direct costs. Selling, general and administrative expenses increased by approximately $0.5 million for the six months ended June 30, 2020, as compared to the six months ended June 30, 2019. The increase is primarily due to selling, general and administrative expenses of Shore Fire that was acquired on December 3, 2019 being included for the six months ended June 30, 2020, and an increase of bad debt expense by $0.3 million from the six months ended June 30, 2019 to the six months ended June 30, 2020.