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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Jun. 30, 2018
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
At June 30, 2018 and 2017, property, plant and equipment consisted of the following (in thousands):
 
 
 
 
June 30,
 
 
Useful Life 
 
2018
 
2017
Furniture and fixtures
 
3 to 5 years
 
$
245

 
$
260

Plant and equipment
 
3 to 17 years
 
8,241

 
7,975

Manufacturing
 
15 years
 
169

 
220

Computers and software
 
3 to 5 years
 
2,064

 
2,246

Leasehold improvements
 
Life of Lease
 
2,729

 
2,681

Land
 
 
 
19

 
19

Construction-in-progress
 
 
 
716

 
347

 
 
 
 
14,183

 
13,748

Less: accumulated depreciation
 
 
 
7,611

 
7,205

Net property, plant and equipment
 
 
 
$
6,572

 
$
6,543


Total depreciation expense in the fiscal years ended June 30, 2018, 2017 and 2016 was $1.0 million, $0.9 million and $0.7 million, respectively. Depreciation expense included in cost of revenues in the fiscal years ended 2018, 2017 and 2016 was $0.8 million, $0.7 million and $0.5 million, respectively.