CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016		Sep. 30, 2015
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 73,939		$ 232,221
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		2,083		0
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of convertible notes and term loan offering costs		6,067		9,744
Amortization of Intangible Assets		6,014		0
Change in fair value of acquired royalty rights		11,872		(19,298)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Change in Unrealized Gain (Loss)		875		0
Depreciation, Amortization and Accretion, Net		16		29
Gain (Loss) on Sale of Investments		(881)		(580)
Stock-based compensation expense		2,649		1,348
Deferred income taxes		(6,013)		9,143
Changes in assets and liabilities:
Receivables from licensees and other		(26,035)		0
Receivables from licensees and other		5,757		294
Prepaid and other current assets		(470)		(4,434)
Accrued interest on notes receivable		(2,745)		(3,076)
Increase (Decrease) in Inventories		(1,593)		0
Other assets		30		35
Accounts payable		6,740		103
Accrued liabilities		1,575		(861)
Increase (Decrease) in Deferred Revenue		9,194		51
Increase (Decrease) in Income Taxes Payable		2,421		(3,293)
Other long-term liabilities		6,084		10,548
Net cash provided by operating activities		86,065		231,386
Cash flows from investing activities
Purchase consideration paid in advance		(109,938)		0
Payments to Acquire Investments		7,985		0
Payments to Acquire Other Investments		(75,000)		0
Proceeds from Sale of Available-for-sale Securities, Equity		1,680		1,124
Purchase of royalty rights		59,500		115,000
Payments for (Proceeds from) Productive Assets		47,240		8,970
Purchase of notes receivable		(8,000)		(8,976)
Proceeds from Collection of Notes Receivable		54,653		20,600
Payments to Acquire Property, Plant, and Equipment		0		9
Net cash used in investing activities		(156,850)		(93,291)
Cash flows from financing activities
Proceeds from Short-term Debt		0		100,000
Repurchase of Convertible Notes		0		177,387
Payment of debt issuance costs		(325)		(607)
Repayments of Notes Payable		(25,000)		(50,000)
Proceeds from Noncontrolling Interests		250		0
Cash dividends paid		(16,433)		(73,623)
Net cash used in financing activities		(41,508)		(201,617)
Net increase (decrease) in cash and cash equivalents		(112,293)		(63,522)
Cash and cash equivalents at beginning of the period		218,883	[1]	291,377
Cash and cash equivalents at end of period	[2],[3]	106,590
Supplemental cash flow information
Cash paid for income taxes		50,000		125,000
Cash paid for interest		9,930		16,045
Other Significant Noncash Transaction, Value of Consideration Given		0		9,794
Line of Credit Facility, Commitment Fee Amount		$ 2,342		$ (1,258)

[1] Note 1

[2] unaudited

[3] unaudited