CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2018		Sep. 30, 2017
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ (85,138)		$ 88,365
Assets held for sale reclassified from other assets to intangibles		1,811		0
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of convertible notes and term loan offering costs		5,745		8,195
Amortization of Acquisition Costs		14,254		18,438
Impairment of Intangible Assets, Finite-lived		152,330		0
Change in fair value of acquired royalty rights		(66,117)		(132,224)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Change in Unrealized Gain (Loss)		(114)		29
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		(22,433)		3,349
Depreciation, Amortization and Accretion, Net		3,061		1,478
Gain (Loss) on Sale of Investments		(764)		(108)
Gain (Loss) on Disposition of Property Plant Equipment		66		0
Increase (Decrease) in Other Receivables		0		1,400
Business Combination, Bargain Purchase, Gain Recognized, Amount		0		3,995
Inventory Write-down		(640)		30
Provision for Doubtful Accounts		0		22
Stock-based compensation expense		4,814		3,014
Deferred income taxes		(3,285)		28,970
Changes in assets and liabilities:
Receivables from licensees and other		15,752		24,565
Prepaid and other current assets		(4,557)		(4,166)
Accrued interest on notes receivable		(230)		1,577
Increase (Decrease) in Inventories		(2,831)		(2,285)
Other assets		(1,805)		347
Accounts payable		(10,774)		1,395
Accrued liabilities		(8,687)		18,980
Increase (Decrease) in Income Taxes Payable		(1,286)		2,432
Other long-term liabilities		1,280		1,055
Net cash (used in) provided by operating activities		(11,359)		58,063
Cash flows from investing activities
Payments to Acquire Investments		0		23,213
Proceeds from Sale and Maturity of Other Investments		0		75,000
Proceeds from Sale of Available-for-sale Securities, Equity		4,116		37,895
Proceeds from Sale of Notes Receivable		0		144,829
Payments for (Proceeds from) Productive Assets		57,049		74,404
Proceeds from Sale of Productive Assets		0		108,169
Purchase of royalty rights		20,000		0
Proceeds from Collection of Notes Receivable		0		8,142
Payments to Acquire Property, Plant, and Equipment		4,641		1,160
Net cash provided by investing activities		36,524		424,066
Cash flows from financing activities
Repayments of Secured Debt		126,447		0
Repayments of Other Debt		0		(87,007)
Cash paid for purchase of noncontrolling interest		0		2,170
Cash dividends paid		0		(21)
Payments for Repurchase of Common Stock		(25,000)		(30,000)
Net cash used in financing activities		(151,447)		(119,198)
Net (decrease) increase in cash and cash equivalents		(126,282)		362,931
Cash and cash equivalents at beginning of the period	[1]	527,266		147,154
Cash and cash equivalents at end of period	[3]	400,984	[2]	510,085
Supplemental cash flow information
Cash paid for income taxes		4,019		35,120
Cash paid for interest		4,591		7,224
Assets held for sale reclassified from notes receivable to other assets		0		10,000
Extinguishment of Debt, Amount		$ 0		$ 43,909

[1] Note 1

[2] unaudited

[3] unaudited