Statements of Stockholders' Equity (USD $) In Thousands, except Share data	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2012	$ 7,597us-gaap_StockholdersEquity	$ 0	$ 285	$ 95,512	$ (88,200)
Beginning Balance, Shares at Dec. 31, 2012		0	28,458,162
Stock option exercises	7			7
Stock option exercises, Shares	23,000		23,334
Stock-based compensation	242			242
Net loss	(2,478)us-gaap_NetIncomeLoss				(2,478)
Ending Balance at Dec. 31, 2013	5,368us-gaap_StockholdersEquity	0	285	95,761	(90,678)
Ending Balance, Shares at Dec. 31, 2013		0	28,481,496
Stock option exercises	10			10
Stock option exercises, Shares	35,000		34,667
Stock-based compensation	195			195
Net loss	(1,727)us-gaap_NetIncomeLoss				(1,727)
Ending Balance at Dec. 31, 2014	$ 3,846us-gaap_StockholdersEquity	$ 0	$ 285	$ 95,966	$ (92,405)
Ending Balance, Shares at Dec. 31, 2014		0	28,516,163

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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- Definition

Number of share options (or share units) exercised during the current period.

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- Definition

Value of stock (or other type of equity) issued during the period as a result of any equity-based compensation plan other than an employee stock ownership plan (ESOP), net of stock value of such awards forfeited. Stock issued could result from the issuance of restricted stock, the exercise of stock options, stock issued under employee stock purchase plans, and/or other employee benefit plans.

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