Unaudited Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Operating activities
Net loss	$ (1,268)	$ (387)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation	502	862
Amortization of intangible assets	77	94
Provision for bad debt	6	144
Stock-based compensation	189	227
(Gain) loss on disposal of assets	(17)	(34)
Amortization of premium on securities available-for-sale	30	(106)
Changes in operating assets and liabilities:
Accounts receivable	(853)	(734)
Inventories	41	(86)
Other assets	(101)	(388)
Accounts payable	454	556
Accrued compensation	237	556
Deferred Revenue	(133)	(263)
Other accrued liabilities	(229)	97
Net cash provided by (used in) operating activities	(1,065)	538
Investing activities
Purchases of property and equipment	(187)	(103)
Proceeds from sale of property and equipment	24	0
Sales and maturities of securities available for sale	1,059	750
Net cash (used in) provided by investing activities	896	647
Financing activities
Issuances of common stock	34	0
Repurchases of common stock	(118)	0
Repayment of obligations under capital leases	0	(58)
Net cash provided by (used in) financing activities	(84)	(58)
Net (decrease) increase in cash and cash equivalents	(253)	1,127
Cash and cash equivalents at beginning of period	24,039	20,459
Cash and cash equivalents at end of period	$ 23,786	$ 21,586