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Segments (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Mar. 13, 2014
Segment Reporting Information [Line Items]                        
Consolidated gross profit $ 4,692 $ 4,802 $ 4,767 $ 3,648 $ 4,284 $ 4,409 $ 4,505 $ 3,442 $ 17,909 $ 16,640 $ 14,116  
Consolidated loss from operations 498 $ 948 $ 1,163 $ 165 816 1,032 825 (155) 2,774 2,518 171  
Consolidated depreciation and amortization                 2,441 1,935 1,913  
Consolidated assets 64,113       41,901       64,113 41,901    
Restructuring charges                 0 692 1,728  
Gain on sale of assets and license agreement                 0 0 1,568  
DIS                        
Segment Reporting Information [Line Items]                        
Consolidated gross profit                 10,439 10,449 9,343  
Consolidated loss from operations                 (506) 220 30  
Consolidated depreciation and amortization                 2,150 1,672 1,436  
Consolidated assets 19,478       18,724       19,478 18,724    
Diagnostic Imaging                        
Segment Reporting Information [Line Items]                        
Consolidated gross profit                 7,470 6,191 4,773  
Consolidated loss from operations                 3,280 2,298 141  
Consolidated depreciation and amortization                 291 263 $ 477  
Consolidated assets $ 44,635       23,177       $ 44,635 $ 23,177    
Restructuring charges         $ 100 $ 100 $ 100 $ 400        
Telerhythmics [Member]                        
Segment Reporting Information [Line Items]                        
Business Acquisition, Percentage of Voting Interests Acquired                       100.00%