INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of components of the provision for income taxes

	Year ended December 31,
	2012			2011		2010
Current:
Federal	$	20,412		$	-	$	-
State		1,534			2		2
		21,946			2		2
Deferred:
Federal		(1,354	)		-		-
State		(406	)		-		-
		(1,760	)		-		-
Total provision for income taxes	$	20,186		$	2	$	2

Schedule of effective income tax rate reconciliation

	Year ended December 31,
	2012			2011			2010
Federal statutory rate		35	%		34	%		34	%
State rate, net of federal benefit		5			6			8
Tax credits		-			(9	)		(128	)
Change in valuation allowance		(18	)		(50	)		(558	)
State tax rate change		-			-			157
Non-qualified option cancellations and forfeitures		-			11			394
Nondeductible compensation expense		-			(1	)		-
Prior year adjustment		-			(2	)		5
Expiring NOLs and tax credits		-			10			84
Other		-			1			5
Effective tax rate		22	%		0	%		1	%

Schedule of components of deferred tax assets

	2012			2011
Federal net operating loss carryforwards	$	-		$	17,041
Research and development and other tax credit carryforwards		27			18,807
State net operating loss carryforwards		-			465
Capitalized research and development costs		817			1,651
Other		916			2,512
Total		1,760			40,476
Less valuation allowance		(-	)		(40,476	)
Deferred tax assets, net	$	1,760		$	-

Schedule of rollforward of the uncertain tax position related to research and development tax credits

Uncertain tax positions at December 31, 2011	$	-
Increase due to positions taken in prior periods		2,945
Uncertain tax positions at December 31, 2012	$	2,945