Note 6 - Segments (Details) - Segment Reporting (Unaudited) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting Information [Line Items]
Revenues	$ 2,231,000	$ 2,087,000	$ 6,910,000	$ 6,503,000
Depreciation and amortization expense	61,000	51,000	182,000	150,000
Operating income (loss)	(178,000)	(234,000)	(182,000)	(144,000)
Impairment of investment				(196,000)
Net loss	(150,000)	(252,000)	(159,000)	(271,000)
Expenditures for segment assets	63,000	50,000	101,000	155,000
Total assets	6,880,000	7,235,000	6,880,000	7,235,000
Intersegment Eliminations [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues		(27,000)	(119,000)	(226,000)
Intersegment Eliminations [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues		(27,000)	(119,000)	(226,000)
DPC [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues		27,000	119,000	226,000
DPC [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	1,141,000	1,436,000	3,902,000	4,143,000
DPC [Member]
Segment Reporting Information [Line Items]
Revenues	1,141,000	1,409,000	3,783,000	3,917,000
Depreciation and amortization expense	14,000	12,000	50,000	31,000
Operating income (loss)	(198,000)	(126,000)	(330,000)	(69,000)
Net loss	(198,000)	(126,000)	(330,000)	(70,000)
Expenditures for segment assets	24,000	16,000	76,000	102,000
Total assets	3,588,000	3,941,000	3,588,000	3,941,000
DPL [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues		0
DPL [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	1,090,000	678,000	3,127,000	2,586,000
DPL [Member]
Segment Reporting Information [Line Items]
Revenues	1,090,000	678,000	3,127	2,586,000
Depreciation and amortization expense	47,000	39,000	132,000	119,000
Operating income (loss)	20,000	(108,000)	148,000	(75,000)
Impairment of investment				(196,000)
Net loss	48,000	(126,000)	171,000	(201,000)
Expenditures for segment assets	39,000	34,000	25,000	53,000
Total assets	3,292,000	3,294,000	3,292,000	3,294,000
Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	$ 2,231,000	$ 2,087,000	$ 6,910,000	$ 6,503,000