Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2013
Accrued Liabilities [Abstract]  
Schedule of Accrued Liabilities
Accrued liabilities include the following at December 31:
(in thousands)
2013
 
2012
Accrued employee related
$
689

 
$
607

Accrued professional fees
397

 
401

Accrued warranty and product
152

 
583

Accrued other
1,098

 
630

 
$
2,336

 
$
2,221