DISCONTINUED OPERATIONS (Details-Disposal Groups) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Dec. 31, 2014	Jun. 06, 2012
DISCONTINUED OPERATIONS
Cash and cash equivalents	$ 176,925	$ 106,251	$ 176,925	$ 106,251	$ 206,975	$ 86,212
Revenue and net income (loss) of discontinued operations
Revenue	1,834	1	1,835	4
Loss before income taxes	(1,021)	(1,343)	(4,640)	(3,369)
Income tax benefit	357	48	1,623	131
Loss from discontinued operations	(664)	$ (1,295)	(3,017)	$ (3,238)
Assets and liabilities of facilities reported as discontinued operations
Current assets	0		0		110
Non-current assets of discontinued operations	4,142		4,142		4,142
Current liabilities	(11,978)		(11,978)		(13,401)
Non-current liabilities	$ (27)		$ (27)		$ (26)
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DISCONTINUED OPERATIONS
Asset Purchase Agreement Proceeds From Sale							$ 55,900