Note 7 - Segment, Major Customers and Geographic Information (Details) - Segment Reporting (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting Information [Line Items]
Revenues	$ 2,037	$ 2,189
Depreciation and amortization expense	61	48
Operating income (loss)	(155)	14
Other expense, net	(3)	93
Net income (loss)	(158)	107
Expenditures for segment assets	22	50
Identifiable assets	6,236	7,115
Intersegment Eliminations [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	(7)	(38)
Intersegment Eliminations [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	(7)	(38)
DPC [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	7	38
DPC [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	1,173	1,170
DPC [Member]
Segment Reporting Information [Line Items]
Revenues	1,166	1,132
Depreciation and amortization expense	16	8
Operating income (loss)	(148)
Net income (loss)	(148)
Expenditures for segment assets	38	33
Identifiable assets	3,416	3,887
DPL [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	871	1,057
DPL [Member]
Segment Reporting Information [Line Items]
Revenues	871	1,057
Depreciation and amortization expense	45	40
Operating income (loss)	(7)	14
Net income (loss)	(10)	107
Expenditures for segment assets	(16)	17
Identifiable assets	2,820	3,228
Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	$ 2,037	$ 2,189