Note 6 - Segments (Details) - Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Segment Reporting Information [Line Items]
Revenues	$ 2,227	$ 2,942	$ 4,416	$ 5,182
Operating income (loss)	(120)	471	(106)	587
Tax expense				12
Net income (loss)	(125)	478	(18)	553
Intersegment Eliminations [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	(161)	(163)	(199)	(293)
Intersegment Eliminations [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	(161)	(163)	(199)	(293)
DPC [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	161	162	199	290
DPC [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	1,535	1,604	2,707	3,143
DPC [Member]
Segment Reporting Information [Line Items]
Revenues	1,376	1,442	2,508	2,853
Depreciation and amortization expense	11	11	19	23
Operating income (loss)	57	132	57	244
Net income (loss)	56	124	56	232
Expenditures for segment assets	53	43	86	57
Identifiable assets	3,890	4,367	3,890	4,367
DPL [Member] | Intersegment Revenues (Member)
Segment Reporting Information [Line Items]
Revenues	0	1		3
DPL [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	851	1,501	1,908	2,332
DPL [Member]
Segment Reporting Information [Line Items]
Revenues	851	1,500	1,908	2,329
Depreciation and amortization expense	40	39	80	76
Operating income (loss)	(177)	339	(163)	343
Net income (loss)	(181)	354	(74)	321
Expenditures for segment assets	2	8	19	14
Identifiable assets	2,796	3,304	2,796	3,304
Total [Member] | Total Revenue (Member)
Segment Reporting Information [Line Items]
Revenues	2,227	2,942	4,416	5,182
Total [Member]
Segment Reporting Information [Line Items]
Revenues	2,227	2,942	4,416	5,182
Depreciation and amortization expense	51	50	99	99
Operating income (loss)	(120)	471	(106)	587
Tax expense				(12)
Net income (loss)	(125)	478	(18)	553
Expenditures for segment assets	55	51	105	71
Identifiable assets	$ 6,671	$ 7,671	$ 6,671	$ 7,671