Note 6 - Segments (Details) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended			6 Months Ended	9 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Sep. 30, 2012	Jun. 30, 2013	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 2,087		$ 1,679		$ 6,503	$ 6,861
Operating income (loss)	(234)		(243)		(144)	344
		196	218	196
Tax expense			8			20
Net income (loss)	(252)		(467)		(271)	86
Intersegment Eliminations [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	(27)		(142)		(226)	(435)
Intersegment Eliminations [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	(27)		(142)		(226)	(435)
DPC [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	27		89		226	379
DPC [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	1,436		1,246		4,143	4,389
DPC [Member]
Segment Reporting Information [Line Items]
Revenues	1,409		1,157		3,917	4,010
Depreciation and amortization expense	12		13		31	36
Operating income (loss)	(126)		(102)		(69)	145
Net income (loss)	(126)		(107)		(70)	125
Expenditures for segment assets	16		10		102	67
Identifiable assets	3,941		3,970		3,941	3,970
DPL [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	0		53			56
DPL [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	678		575		2,586	2,907
DPL [Member]
Segment Reporting Information [Line Items]
Revenues	678		522		2,586	2,851
Depreciation and amortization expense	39		38		119	114
Operating income (loss)	(108)		(144)		(75)	199
			(218)		(196)	(218)
Net income (loss)	(126)		(360)		(201)	(39)
Expenditures for segment assets	34				53	14
Identifiable assets	3,294		3,532		3,294	3,532
Total [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	2,087		1,679		6,503	6,861
Total [Member]
Segment Reporting Information [Line Items]
Revenues	2,087		1,679		6,503	6,861
Depreciation and amortization expense	51		51		150	150
Operating income (loss)	(234)		(243)		(144)	344
			(218)		(196)	(218)
Tax expense			(8)			(20)
Net income (loss)	(252)		(467)		(271)	86
Expenditures for segment assets	50		10		155	81
Identifiable assets	$ 7,235		$ 7,502		$ 7,235	$ 7,502