Assets Manufactured for Internal Use, net

12 Months Ended

Dec. 31, 2016

Assets Manufactured for Internal Use, net

Assets Manufactured for Internal Use, net

Note 9. Assets Manufactured for Internal Use, net

The components of assets manufactured for internal use, included in amounts reported as other assets, are as follows:

	December 31,
	2016		2015
	(in thousands)
Internal use assets	$	42,776	$	31,759
Construction in process		1,745		470
Total cost		44,521		32,229
Accumulated depreciation		(22,838)		(20,193)
Assets manufactured for internal use, net	$	21,683	$	12,036

These products are used for research and development, training, and customer demonstration purposes.

Depreciation expense was $2.4 million, $2.5 million and $2.2 million for the years ended December 31, 2016, 2015 and 2014, respectively.