Note 7 - Segments (Detail) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Revenues	$ 1,679	$ 3,024	$ 6,861	$ 9,174
Depreciation expense			76	51
Operating income (loss)	(243)	474	344	1,089
Tax expense	(8)	(39)	(20)	(49)
Net income (loss)	(467)	449	86	1,027
DPC [Member] | Three Month Period [Member]
Identifiable assets	3,970		3,970
DPC [Member]
Revenues	1,157	1,722	4,010	5,046
Intersegment revenues	89	131	379	368
Total revenues	1,246	1,853	4,389	5,414
Depreciation expense	13	10	36	19
Operating income (loss)	(102)	246	145	566
Net income (loss)	(107)	208	125	518
Expenditures for segment assets	10	17	67	21
Identifiable assets	3,970	3,968	3,970	3,968
DPL [Member] | Three Month Period [Member]
Identifiable assets	3,532		3,532
DPL [Member]
Revenues	522	1,302	2,851	4,128
Intersegment revenues	53	6	56	11
Total revenues	575	1,308	2,907	4,139
Depreciation expense	38	10	114	32
Operating income (loss)	(144)	228	199	523
Net income (loss)	(360)	241	(39)	509
Expenditures for segment assets		(1)	14	22
Identifiable assets	3,532	3,208	3,532	3,208
Intersegment Elimination [Member]
Intersegment revenues	(142)	(137)	(435)	(379)
Total revenues	(142)	(137)	(435)	(379)
Total [Member] | Three Month Period [Member]
Identifiable assets	7,502		7,502
Total [Member]
Revenues	1,679	3,024	6,861	9,174
Total revenues	1,679	3,024	6,861	9,174
Depreciation expense	51	20	150	51
Operating income (loss)	(243)	474	344	1,089
Financial expense, net	(216)	14	(238)	(13)
Tax expense	(8)	(39)	(20)	(49)
Net income (loss)	(467)	449	86	1,027
Expenditures for segment assets	10	16	81	43
Identifiable assets	$ 7,502	$ 7,176	$ 7,502	$ 7,176