Note 6 - Segments (Details) - Segment Reporting (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenues	$ 2,642	$ 2,227	$ 4,679	$ 4,416
Depreciation and amortization expense	60	51	121	99
Operating income (loss)	151	76	(4)	90
Net income (loss)	149	(125)	(9)	(18)
Expenditures for segment assets	16	55	38	105
Total assets	6,479	6,671	6,479	6,671
Intersegment Eliminations [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	(112)	(161)	(119)	(199)
Intersegment Eliminations [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	(112)	(161)	(119)	(199)
DPC [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	112	161	119	199
DPC [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	1,588	1,535	2,761	2,707
DPC [Member]
Segment Reporting Information [Line Items]
Revenues	1,476	1,376	2,642	2,508
Depreciation and amortization expense	20	11	36	19
Operating income (loss)	16	57	(132)	57
Net income (loss)	16	56	(132)	56
Expenditures for segment assets	14	53	52	86
Total assets	3,330	3,890	3,330	3,890
DPL [Member] | Intersegment Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
DPL [Member] | Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	1,166	851	2,037	1,908
DPL [Member]
Segment Reporting Information [Line Items]
Revenues	1,166	851	2,037	1,908
Depreciation and amortization expense	40	40	85	80
Operating income (loss)	135	19	128	33
Net income (loss)	133	(181)	123	(74)
Expenditures for segment assets	2	2	(14)	19
Total assets	3,149	2,796	3,149	2,796
Total Revenues [Member]
Segment Reporting Information [Line Items]
Revenues	$ 2,642	$ 2,227	$ 4,679	$ 4,416