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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2017
Accounting Policies [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following table presents a reconciliation of basic and diluted (loss) income per share computations (in thousands, except per share amounts):
 
 
For the year ended December 31,
 
2017
 
2016
 
2015
Numerator:
 
 
 
 
 
(Loss) income from continuing operations
$
(11,267
)
 
$
(16,875
)
 
$
9,471

Loss from discontinued operations
—

 
(12
)
 
(691
)
Net (loss) income
$
(11,267
)
 
$
(16,887
)
 
$
8,780

 
 
 
 
 
 
Denominator:
 
 
 
 
 
Basic weighted average common shares outstanding
11,806

 
11,673

 
10,413

Potential common shares from options and warrants
—

 
—

 
339

Diluted weighted average shares
11,806

 
11,673

 
10,752
Schedule of Warranty Activity
The warranty activity for the respective years is as follows (in thousands):
  
 
At December 31,
 
2017
 
2016
 
 
 
 
Balance at the beginning of the year
$
331

 
$
314

Accruals for warranties issued
196

 
170

Adjustments to existing warranties
(87
)
 
(95
)
Settlements made during the year (in kind)
(266
)
 
(58
)
Accrued warranty expense
$
174

 
$
331