DISCONTINUED OPERATIONS (Details) (USD $)	3 Months Ended	9 Months Ended
	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenues, income (loss) and income taxes related to discontinued operations
Income (loss) from discontinued operations	$ 85,000	$ 1,911,000	$ (368,000)
Non-Coblation spine products
Discontinued operations
Cash proceeds from sale of assets		5,500,000
Gain on sale of assets, after tax		1,300,000
Revenues, income (loss) and income taxes related to discontinued operations
Revenue	1,429,000	2,271,000	4,532,000
Gain on sale of assets, before tax		2,177,000
Income (loss) from discontinued operations before income taxes	119,000	3,084,000	(528,000)
Income tax provision (benefit)	34,000	1,173,000	(160,000)
Income (loss) from discontinued operations	$ 85,000	$ 1,911,000	$ (368,000)