Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities:
Net loss	$ (533)	$ (1,259)
Loss from discontinued operations, net of tax	(19)	(60)
Loss from continuing operations	(514)	(1,199)
Adjustments to reconcile loss from continuing operations to net cash used in operating activities:
Depreciation and amortization	115	120
Stock-based compensation (see Note 6)	8	20
Gain on sale of assets	(100)	0
Amortization of discount on debt	31	0
Provision for losses on receivables	20	42
Unrealized loss on short-term investments	10	0
Changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(150)	358
Inventories	201	(352)
Prepaid expenses and other assets	(138)	429
Accounts payable	(310)	70
Deferred revenue	(5)	0
Accrued expenses	(106)	80
Income taxes payable	(3)	(2)
Net cash used in operating activities-continuing operations	(941)	(434)
Net cash used in operating activities-discontinued operations	(60)	(157)
Net cash used in operating activities	(1,001)	(591)
Investing activities:
Acquisition of businesses, net of cash acquired	0	(1,178)
Purchase of property and equipment	(68)	(45)
Purchase of intangible assets	(6)	0
Purchase of short-term investments	(1,425)	0
Net cash used in investing activities-continuing operations	(1,499)	(1,223)
Net cash provided by investing activities-discontinued operations	1,574	924
Net cash provided by (used in) investing activities	75	(299)
Financing activities:
Proceeds from long-term debt	0	1,400
Payments on long-term debt and capital lease obligations	(28)	(711)
Net cash (used in) provided by financing activities-continuing operations	(28)	689
Net cash used in financing activities-discontinued operations	(31)	(75)
Net cash (used in) provided by financing activities	(59)	614
Net decrease in cash and cash equivalents	(985)	(276)
Cash and cash equivalents at beginning of period	7,871	2,564
Cash and cash equivalents at end of period	$ 6,886	$ 2,288