Field Equipment, Net

12 Months Ended

Dec. 31, 2018

Field Equipment [Abstract]

Field Equipment, Net

Note 7: Field equipment, net

The following table sets forth the Company’s field equipment, net:

	December 31,
	2018			2017
Field equipment	$	17,380		$	15,020
Accumulated depreciation		(10,456	)		(5,984	)
Field equipment, net	$	6,924		$	9,036

Depreciation expense was $5,553, $4,483 and $3,248 for the years ended December 31, 2018, 2017 and 2016, respectively. Write downs of $350, $195, and $6,436 were identified for the years ended December 31, 2018, 2017 and 2016, respectively.

The Company made the second generation Optune system available to all patients in the United States in 2016 and manufacturing of the first generation Optune system has been terminated. In 2016, the Company recorded an impairment loss with respect to the write-down of first generation Optune system field equipment in the amount of $6,412 (finished goods and production stage goods in the amount of $4,830 and $1,582, respectively)presented in cost of revenues.