Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Cash flows from operating activities:
Net (loss) income	$ (7,340)	$ 1,548
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation expense	708	831
Change in the value of contingent consideration	(94)	(31)
Provision for losses on accounts receivable	469	485
Amortization of intangible assets	131	81
Impairment of intangible assets	160
Impairment of goodwill	251
Amortization of financing fees	50	50
Issuance of common stock for services		20
Provision for obsolete inventory	97	573
Write-off of field inventory	1,340
Deferred rent	1,299	(296)
Employee stock-based compensation expense	133	166
Deferred tax expense (benefit)	1,069	(168)
Changes in operating assets and liabilities, net of business acquisitions (2012):
Accounts receivable	4,722	(1,725)
Inventory	(279)	(2,070)
Prepaid expenses	(103)	50
Income tax receivable	(893)
Deposits and other current assets	(207)	(12)
Accounts payable	686	(132)
Accrued liabilities	(1,247)	(112)
Income taxes payable	(1,334)	(137)
Net cash used in operating activities	(382)	(879)
Cash flows from investing activities:
Purchases of equipment and inventory used for rental	(644)	(756)
Change in inventory used for rental	764	(565)
Payments on contingent consideration	(3)
Cash paid for domain name		(18)
Cash paid for acquisition of NeuroDyne		(245)
Net cash provided by (used in) investing activities	117	(1,584)
Cash flows from financing activities:
Net borrowings on line of credit	(86)	2,617
Deferred financing fees		(2)
Payments on notes payable and capital lease obligations	(149)	(131)
Issuance of common stock		13
Net cash (used in) provided by financing activities	(235)	2,497
Net (decrease) increase in cash	(500)	34
Cash at the beginning of the period	823	789
Cash at the end of the period	323	823
Supplemental cash flow information:
Interest paid	561	352
Income taxes paid (including interest and penalties)	399	1,127
Supplemental disclosure of non-cash investing and financing activities:
Equipment acquired through note payable and capital lease	137
Common stock issuances for business acquisition		158
Increase in contingent consideration for business acquisition		135
Contribution of property and equipment by noncontrolling interest		$ 10