CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands		9 Months Ended				12 Months Ended
		Sep. 30, 2017		Sep. 30, 2016		Dec. 31, 2016
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest		$ 88,365		$ 73,939
Noncash or Part Noncash Acquisition, Other Liabilities Assumed						$ 87,007
Noncash or Part Noncash Acquisition, Value of Liabilities Assumed						47,360
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of convertible notes and term loan offering costs		8,195		6,067
Amortization of Intangible Assets		18,438		6,014
Change in fair value of acquired royalty rights		(132,224)		11,872
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Change in Unrealized Gain (Loss)		29		875
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability		3,349		2,083
Depreciation, Amortization and Accretion, Net		1,478		16
Gain (Loss) on Sale of Investments		(108)		(881)
Increase (Decrease) in Other Receivables		(1,400)		0
Business Combination, Bargain Purchase, Gain Recognized, Amount		(3,995)		0
Inventory Write-down		30		0
Provision for Doubtful Accounts		22		0
Stock-based compensation expense		3,014		2,649
Deferred income taxes		28,970		(6,013)
Changes in assets and liabilities:
Receivables from licensees and other		19,454		(26,035)
Receivables from licensees and other		(5,111)		5,757
Prepaid and other current assets		(4,166)		(470)
Accrued interest on notes receivable		1,577		(2,745)
Increase (Decrease) in Inventories		(2,285)		(1,593)
Other assets		347		30
Accounts payable		1,395		6,740
Accrued liabilities		18,980		10,769
Increase (Decrease) in Income Taxes Payable		2,432		2,421
Other long-term liabilities		1,055		6,084
Net cash provided by operating activities		58,063		86,065
Cash flows from investing activities
Purchase consideration paid in advance		0		(109,938)
Payments to Acquire Investments		23,213		7,985
Payments to Acquire Other Investments		0		75,000
Proceeds from Sale and Maturity of Other Investments		75,000		0
Proceeds from Sale of Available-for-sale Securities, Equity		37,895		1,680
Proceeds from Sale and Collection of Notes Receivable		144,829		0
Purchase of royalty rights		0		59,500
Payments for (Proceeds from) Productive Assets		74,404		47,240
Proceeds from Sale of Productive Assets		108,169		0
Purchase of notes receivable		0		(8,000)
Proceeds from Collection of Notes Receivable		8,142		54,653
Payments to Acquire Property, Plant, and Equipment		1,160		0
Net cash provided by / (used in) investing activities		424,066		(156,850)
Cash flows from financing activities
Payments of Debt Issuance Costs		0		325
Repayments of Notes Payable		0		(25,000)
Proceeds from Noncontrolling Interests		0		250
Other Payments to Acquire Businesses		(87,007)		0
Cash paid for purchase of noncontrolling interest		(2,170)		0
Cash dividends paid		(21)		(16,433)
Payments for Repurchase of Common Stock		(30,000)		0
Net cash used in financing activities		(119,198)		(41,508)
Net increase (decrease) in cash and cash equivalents		362,931		(112,293)
Cash and cash equivalents at beginning of the period	[1]	147,154		218,883		218,883
Cash and cash equivalents at end of period		510,085	[2],[3]	106,590	[3]	$ 147,154	[1]
Supplemental cash flow information
Cash paid for income taxes		35,120		50,000
Cash paid for interest		7,224		9,930
Line of Credit Facility, Commitment Fee Amount		0		2,342
Assets held for sale reclassified from notes receivable to other assets		10,000		0
Extinguishment of Debt, Amount		$ 43,909		$ 0

[1] Note 1

[2] unaudited

[3] unaudited