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Segment Reporting (Tables)
3 Months Ended
Mar. 31, 2016
Segment Reporting [Abstract]  
Summary of Segmented Data

    Energy & Security Sonar Solutions     PGM     Other     Total  
Three months ended March 31, 2016                                
Revenues from external customers   $ 3,582     $ 667     $ 512     $ 4,761  
Intersegment revenues                          
Segment gross profit     1,133       333       165       1,631  
Depreciation and amortization     43       16       12       71  
Segment net income (loss) before income taxes     67       (239 )     (26 )     (198 )
                                 
Three months ended March 31, 2015                                
Revenues from external customers   $ 2,660     $ 553     $ 497     $ 3,710  
Intersegment revenues                        
Segment gross profit     605       340       297       1,242  
Depreciation and amortization     45       18       11       74  
Segment net income (loss) before income taxes     (294 )     (278 )     105       (467 )

Schedule of Reconciliation of Segment Data to Consolidated Statement of Operations

    Three months ended March 31,  
    2015     2016  
Total net loss before income taxes for reportable segments   $ (572 )   $ (172 )
Other operational segment net income (loss) before income taxes     105       (26 )
Total segment net loss before income taxes     (467 )     (198 )
Unallocated cost of corporate headquarters*     (1,033 )     (1,419 )
Unallocated benefit (cost) of DSIT headquarters     10       (15 )
Consolidated loss before income taxes   $ (1,490 )   $ (1,632 )

 

* Includes stock compensation expense of $208 and $220 for the three month periods ended March 31, 2015 and 2016, respectively. The three month period ended March 31, 2016 also includes $460 of salary and associated costs and medical insurance associated with the resignation of Mr. Moore and $250 of interest expense to Leap Tide and directors.