Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Jun. 30, 2011	Jun. 30, 2010
Net revenue:
Rental	$ 2,447	$ 2,335		$ 4,895	$ 4,606
Sales	5,948	3,407		10,133	6,011
Total net revenue	8,395	5,742		15,028	10,617
Cost of revenue:
Rental	392	258		726	533
Sales	1,335	964		2,445	1,685
Total cost of revenue	1,727	1,222		3,171	2,218
Gross profit	6,668	4,520		11,857	8,399
Selling, general and administrative expense	5,769	4,390		11,097	8,237
Income from operations	899	130		760	162
Other income (expense):
Interest income	1	3		1	4
Interest expense and loss on extinguishment of debt	(80)	(53)		(138)	(132)
Other income (expense)	2	2		2	(16)
Total other income (expense)	(77)	(48)		(135)	(144)
Income before income tax	822	82		625	18
Income tax expense	(338)	(52)		(251)	(55)
Net income (loss)	$ 484	$ 30		$ 374	$ (37)
Net income (loss) per share:
Basic	$ 0.02	$ 0	[1]	$ 0.01	$ 0	[2]
Diluted	$ 0.02	$ 0	[1]	$ 0.01	$ 0	[2]
Weighted average number of common shares outstanding:
Basic	30,756,717	30,513,285		30,694,216	30,505,347
Diluted	31,025,478	30,702,944		30,957,206	30,716,349

[1] Less than $0.01 per share

[2] Less than ($0.01) per share