INCOME TAXES (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets:
Net operating loss carryforwards	$ 5,390,000	$ 4,237,000
Tax carryforwards	80,000	133,000
In-process research and development	330,000	665,000
Deferred revenue		88,248,000
Intangibles	3,282,000	1,363,000
Other, net	14,180,000	11,226,000
Total deferred tax assets	23,262,000	105,872,000
Convertible Debt	41,940,000
Valuation allowance for deferred tax assets	(4,310,000)	(2,670,000)
Deferred tax (liabilities) assets, net	(22,988,000)	103,202,000
Increase (decrease) in valuation allowance	1,600,000	(39,800,000)	7,800,000
Federal net operating loss carryforwards related to stock option deductions	11,000,000
State net operating loss carryforward related to stock option deductions	13,900,000
Tax effect of the stock option benefit		4,700,000
Activity related to unrecognized tax benefits
Accrued interest associated with unrecognized tax benefits	300,000
Accrued penalties associated with unrecognized tax benefits	100,000
Unrecognized tax benefits at the beginning of the period	3,879,000	3,594,000	3,573,000
Gross increases - current year tax positions	27,000	174,000	21,000
Gross increases - prior year tax positions	1,273,000	111,000
Unrecognized tax benefits at the end of the period	5,179,000	3,879,000	3,594,000
Expiration of statue of limitations	$ 100,000