Business Segment Data (Details) - Business Segment Data - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues:
Revenues	$ 5,774,000	$ 6,044,000	$ 9,611,000	$ 10,398,000
Operating income (loss):
Operating Income (Loss)	31,000	(450,000)	(932,000)	(1,287,000)
Interest expense, net	(40,000)	(73,000)	(75,000)	(123,000)
(Loss) gain on foreign currency remeasurement	(8,000)	(42,000)	(142,000)	190,000
Gain on sale/leaseback transaction	33,000		55,000
Warrant expense	(7,000)	(17,000)	(14,000)	(35,000)
Income (loss) before income taxes	9,000	(582,000)	(1,108,000)	(1,255,000)
Income tax benefit (expense)	73,000		73,000	(8,000)
Net income (loss)	82,000	(582,000)	(1,035,000)	(1,263,000)
Corporate, Non-Segment [Member]
Operating income (loss):
Operating Income (Loss)	(799,000)	(811,000)	(1,671,000)	(1,609,000)
Digital Product Sales [Member] | Operating Segments [Member]
Revenues:
Revenues	4,998,000	5,114,000	7,998,000	8,520,000
Operating income (loss):
Operating Income (Loss)	608,000	120,000	248,000	(189,000)
Digital Product Lease And Maintenance [Member] | Operating Segments [Member]
Revenues:
Revenues	776,000	930,000	1,613,000	1,878,000
Operating income (loss):
Operating Income (Loss)	$ 222,000	$ 241,000	$ 491,000	$ 511,000