Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Cash flows from operating activities:
Net loss	$ (1,444)	$ (310)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	135	213
Change in the value of contingent consideration		4
Provision for losses on accounts receivable	8	136
Amortization of intangible assets	21	15
Amortization of financing fees	13	13
Change in obsolete inventory	14	17
Deferred rent	357	(93)
Employee stock-based compensation expense	31	36
Changes in operating assets and liabilities:
Accounts receivable	741	854
Inventory	(23)	(181)
Prepaid expenses	102	(13)
Deposits and other current assets	(47)	(170)
Accounts payable	162	(382)
Accrued liabilities	(71)	(705)
Income taxes payable	(2)	(427)
Net cash used in operating activities	(3)	(993)
Cash flows from investing activities:
Purchases of equipment and inventory used for rental	(11)	(55)
Change in inventory used for rental	130	247
Net cash provided by investing activities	119	192
Cash flows from financing activities:
Net (repayments) borrowings on line of credit	(212)	696
Payments on notes payable and capital lease obligations	(38)	(37)
Net cash provided by financing activities	(250)	659
Net decrease in cash	(134)	(142)
Cash at the beginning of the period	323	823
Cash at the end of the period	189	681
Supplemental cash flow information:
Interest paid	133	113
Income taxes paid (including interest and penalties)	2	427
Supplemental disclosure of non-cash investing and financing activities:
Equipment acquired through note payable and capital lease		$ 72