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Basis of Presentation and Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]  
Reconciliation of basic and diluted income (loss) per share
The following is a reconciliation of the numerator and denominator of the basic and diluted net (loss) income per share computations for the periods presented below (in thousands):

 
Three months ended
June 30,
 
Six months ended
June 30,
 
2016
 
2015
 
2016
 
2015
Numerator:
 
 
 
 
 
 
 
(Loss) income from continuing operations
$
(3,916
)
 
$
2,192

 
$
(5,893
)
 
$
3,416

Loss from discontinued operations
—

 
(81
)
 
(12
)
 
(176
)
Net (loss) income
$
(3,916
)
 
$
2,111

 
$
(5,905
)
 
$
3,240

 
 
 
 
 
 
 
 
Denominator:
 
 
 
 
 
 
 
Basic weighted average common shares outstanding
11,657

 
10,019

 
11,653

 
9,846

Potential common shares from equity awards and warrants
—

 
119

 
—

 
212

Diluted weighted average shares
11,657

 
10,138

 
11,653

 
10,058
Schedule of warranty activity
The following table summarizes warranty activity for the periods presented (in thousands):

 
Three months ended
June 30,
 
Six months ended
June 30,
 
2016
 
2015
 
2016
 
2015
Balance at beginning of period
$
327

 
$
410

 
$
314

 
$
81

Accruals for warranties issued
30

 
49

 
46

 
381

Adjustments to existing warranties
(52
)
 
(56
)
 
(52
)
 
(56
)
Settlements made during the period (in cash or in kind)
(7
)
 
(12
)
 
(10
)
 
(15
)
Accrued warranty reserve
$
298

 
$
391

 
$
298

 
$
391