Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Cash flows from operating activities:
Net income	$ 965	$ 330
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation expense	594	591
Provision for losses on uncollectible accounts receivable	1,190	118
Amortization of financing fees	36	31
Issuance of common stock for services	61	61
Provision for obsolete inventory	134	(2)
Deferred rent	(166)	846
Net loss on disposal of equipment		18
Employee stock-based compensation expense	207	203
Deferred tax benefit	(216)	(331)
Changes in operating assets and liabilities:
Accounts receivable	(4,637)	(1,707)
Inventory	(791)	(1,389)
Prepaid expenses	(1)	100
Deposits and other current assets	(47)	(19)
Accounts payable	848	358
Accrued liabilities	906	331
Income taxes payable	142	(364)
Net cash used in operating activities	(775)	(825)
Cash flows from investing activities:
Proceeds received in lease termination		108
Purchases of equipment and inventory used for rental	(1,123)	(271)
Net cash used in investing activities	(1,123)	(163)
Cash flows from financing activities:
Net borrowings from line of credit	2,110	972
Issuance of common stock	49
Deferred financing fees	(25)	(90)
Payments on capital lease obligations	(77)	(164)
Net cash provided by financing activities	2,057	718
Net increase (decrease) in cash	159	(270)
Cash at beginning of period	602	863
Cash at end of period	761	593
Supplemental cash flow information:
Interest paid	175	83
Income taxes paid	750	955
Supplemental disclosure of non-cash investing and financing activities:
Equipment acquired through capital lease	$ 77	$ 334