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Property and Equipment (Tables)
12 Months Ended
Mar. 31, 2017
Property, Plant and Equipment [Abstract]  
Property and equipment
Property and equipment were comprised of the following (dollars in thousands):
 
March 31, 2017
 
March 31, 2016
Land and land improvements
$
424

 
$
421

Buildings and building improvements
9,245

 
11,849

Furniture, fixtures and office equipment
7,056

 
7,233

Leasehold improvements
324

 
148

Equipment leased to customers under Power Purchase Agreements
4,997

 
4,997

Plant equipment
11,627

 
10,805

Construction in progress
61

 
128

 
33,734

 
35,581

Less: accumulated depreciation and amortization
(19,948
)
 
(18,577
)
Net property and equipment
$
13,786

 
$
17,004

Depreciable lives by asset category are as follows:
Land improvements
10-15 years
Buildings and building improvements
10-39 years
Furniture, fixtures and office equipment
2-10 years
Leasehold improvements
Shorter of asset life or life of lease
Equipment leased to customers under Power Purchase Agreements
20 years
Plant equipment
3-10 years
Equipment under capital leases
Equipment included above under capital leases was as follows (dollars in thousands):
 
March 31, 2017
 
March 31, 2016
Equipment
$
581

 
408

Less: accumulated depreciation and amortization
(202
)
 
(65
)
Net equipment
$
379

 
$
343