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Segment Reporting and Geographic Information - Reconciliation of Segment Data to Consolidated Statement Balance Sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting [Abstract]    
Total assets for reportable segments $ 2,552 $ 17,765
Total assets of other operational segment 441
Assets of discontinued operations 119 1,108
Unallocated assets of DSIT headquarters 4,367
Unallocated assets of OmniMetrix headquarters 213 397
Assets of corporate headquarters [1] 6,356 252
Total consolidated assets $ 9,240 $ 24,330
[1] Includes the investment in DSIT of $5,658 and the escrow deposit of $579 from the DSIT Transaction at December 31, 2016.