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STATEMENTS OF CASH FLOWS (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Operating Activities:    
Net income (loss) $ 1,379,000 $ (1,624,000)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:    
Depreciation and amortization 1,058,000 1,148,000
Deferred income tax expense 178,000 92,000
Stock-based compensation 533,000 342,000
Gain on sale of property and equipment (12,000)  
Changes in operating assets and liabilities:    
Accounts receivable (503,000) (1,121,000)
Inventories 3,000 11,000
Income tax receivable 789,000 (427,000)
Prepaid expenses and other 234,000 479,000
Accounts payable 514,000 (322,000)
Accrued liabilities (103,000) (858,000)
Income tax payable 22,000 (748,000)
Accrued income taxes 28,000 6,000
Deferred revenue (141,000) 311,000
Net cash provided by (used in) operating activities 3,979,000 (2,711,000)
Investing Activities:    
Purchases of property and equipment (265,000) (138,000)
Proceeds received from sale of property and equipment 15,000  
Net cash used in investing activities (250,000) (138,000)
Financing Activities:    
Proceeds from issuance of common stock, net 91,000 131,000
Repurchase of common stock (2,328,000) (213,000)
Net cash used in financing activities (2,237,000) (82,000)
Increase (decrease) in cash and cash equivalents 1,492,000 (2,931,000)
Cash and cash equivalents at beginning of year 20,271,000 23,202,000
Cash and cash equivalents at end of year 21,763,000 20,271,000
Supplemental disclosures for cash flow information:    
Cash paid during the year for income taxes $ 842,000 $ 835,000