STATEMENTS OF CASH FLOWS (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Operating Activities:
Net income (loss)	$ 938,000	$ (1,693,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	806,000	850,000
Change in allowance for doubtful accounts	105,000
Deferred income tax expense	3,000
Stock-based compensation	324,000	289,000
Gain on sale of property and equipment	(12,000)
Changes in operating assets and liabilities:
Accounts receivable	(1,309,000)	(1,748,000)
Inventories	(33,000)	(18,000)
Income tax receivable	775,000	(670,000)
Prepaid expenses and other	144,000	193,000
Accounts payable	729,000	920,000
Accrued liabilities	(220,000)	(829,000)
Income tax payable	252,000	(748,000)
Deferred revenue	421,000	158,000
Net cash provided by (used in) operating activities	2,923,000	(3,296,000)
Investing Activities:
Purchases of property and equipment	(231,000)	(50,000)
Proceeds received from sale of property and equipment	15,000
Net cash used in investing activities	(216,000)	(50,000)
Financing Activities:
Proceeds from issuance of common stock, net	85,000	131,000
Repurchase of common stock, net	(2,328,000)	(213,000)
Net cash used in financing activities	(2,243,000)	(82,000)
Increase (decrease) in cash and cash equivalents	464,000	(3,428,000)
Cash and cash equivalents at beginning of period	20,271,000	23,202,000
Cash and cash equivalents at end of period	20,735,000	19,774,000
Supplemental disclosures for cash flow information:
Cash paid during the year for income taxes	557,000	639,000
Non-cash financing activities:
Cashless exercise of options	$ 4,000