Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Summary of Property and Equipment

The following is a summary of property and equipment and related accumulated depreciation by major classification as of December 31, 2016 and 2015 (in thousands):

	December 31, 2016			December 31, 2015
Office furniture and equipment	$	333		$	258
Leasehold improvements	166			595
Computers and equipment	836			108
Field trailers	10			10
Design center	470			470
	1,815			1,441
Less: accumulated depreciation	(923		)	(639		)
Total property and equipment, net	$	892		$	802