Quaterly Financial Information (Unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Dec. 31, 2014		Sep. 30, 2014		Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Quarterly Financial Information Disclosure [Abstract]
Restructuring charges			$ 100		$ 100		$ 400										$ 692	$ 1,728	$ 0
Revenue	14,143		13,881		14,587		12,997		12,527		12,413		12,890		11,546		42,170	37,171	36,064
Gross profit	4,284		4,409		4,505		3,442		3,688		3,818		3,793		2,817		16,640	14,116	13,092
Loss from operations	816	[1]	1,032	[1]	825	[1]	(155)	[1]	780		2,432		(632)		(2,409)		2,518	171	(5,098)
Net income (loss)	772		1,028		823		(148)		787		2,512		(616)		(2,419)		2,475	264	(4,924)
Earnings Per Share, Basic (in dollars per share)	$ 0.04	[2]	$ 0.06	[2]	$ 0.04	[2]	$ (0.01)	[2]	$ 0.04	[2]	$ 0.14	[2]	$ (0.03)	[2]	$ (0.13)	[2]	$ 0.13	$ 0.01	$ (0.26)
Earnings Per Share, Diluted (in dollars per share)	$ 0.04	[2]	$ 0.05	[2]	$ 0.04	[2]	$ (0.01)	[2]	$ 0.04		$ 0.14		$ (0.03)		$ (0.13)		$ 0.13	$ 0.01	$ (0.26)
Gain on sale of assets and license agreement																	$ 0	$ (1,568)	$ 0

[1] (1) On March 13, 2014, we acquired 100% of the membership interest of Telerhythmics, LLC. The results of Telerhythmics are included in Diagnostic Services since the acquisition date (See Note 3).(2) Included in the income (loss) from operations for the first, second, third, and fourth quarter of 2014, are approximately $0.4 million, $0.1 million, $0.1 million, and less than $0.1 million of charges, respectively, associated with our Diagnostic Imaging and Facilities restructuring initiatives (See Note 11).

[2] Earnings per share are computed independently for each of the quarters presented. Therefore, the sum of the quarterly net earnings per share will not necessarily equal the total for the year.