Discontinued Operations (Narrative) (Details) - USD ($)		9 Months Ended
Feb. 17, 2017	Sep. 30, 2018	Sep. 30, 2017
Revenue earn-out		$ 0
Loss on sale of discontinued operations, net of income taxes			$ 164,000
Cardiac Diagnostic Monitoring Business [Member] \| Discontinued Operations, Disposed of by Sale [Member]
Revenue earn-out	$ 0
Loss on sale of discontinued operations, net of income taxes	$ 164,000

Amount after tax of gain (loss) not previously recognized resulting from the disposal of a discontinued operation.

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