Gain on Sale of Assets	12 Months Ended
Dec. 31, 2019
Gain on Sale of Assets [Abstract]
GAIN ON SALE OF ASSETS	15. GAIN ON SALE OF ASSETS During the third quarter of 2018, we sold the assets underlying our water diagnostic product for $700,000. This sale of assets was recognized as an operating activity at that time in accordance with ASC 610: Other Income and ASC 810: Consolidation. An upfront payment of $250,000 was received upon closing, a second payment of $250,000 was received during the third quarter of 2019 and a third payment of $200,000 was received during the fourth quarter of 2019 (these latter two payments were recorded in prepaid expenses and other current assets as of December 31, 2018).

Gain on Sale of Assets

12 Months Ended

Dec. 31, 2019

15. GAIN ON SALE OF ASSETS

During the third quarter of 2018, we sold the assets underlying our water diagnostic product for $700,000. This sale of assets was recognized as an operating activity at that time in accordance with ASC 610: Other Income and ASC 810: Consolidation. An upfront payment of $250,000 was received upon closing, a second payment of $250,000 was received during the third quarter of 2019 and a third payment of $200,000 was received during the fourth quarter of 2019 (these latter two payments were recorded in prepaid expenses and other current assets as of December 31, 2018).