Assets Held for Sale (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2020		Mar. 31, 2019	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Less: Cash and cash equivalents of discontinued operations		$ 21,305		$ 24,469
Cash and cash equivalents		125,512	[1]		$ 168,982	[2]
Accounts payable		5,229	[1]		2,675	[2]
Revenues		5,995		6,696
Cost of Revenue		2,860		3,800
Amortization of intangible assets		302		318
General and administrative		12,869		8,313
Selling and Marketing Expense		1,250		1,574
Research and Development Expense		1,856		910
Operating Income (Loss)		(31,876)		(8,219)
Nonoperating Income (Expense)		(14,364)		(1,081)
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		75		18,689
Discontinued Operation, Tax Effect of Discontinued Operation		319		3,620
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		(244)		15,069
Accrued Liabilities, Current		11,959	[1]		11,923	[2]
Liabilities		106,688	[1]		123,928	[2]
Accounts and Other Receivables, Net, Current		7,865	[1]		6,559	[2]
Inventory, Net	[1]	10,542			8,061
Prepaid and other current assets		22,012	[1]		7,344	[2]
Property and equipment, net		3,264	[1]		2,560	[2]
Intangible Assets, Net (Excluding Goodwill)	[1]	12,884			13,186
Assets		659,803	[1]		717,206	[2]
Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash and cash equivalents		21,305			24,469
Accounts payable		7,432			14,695
Revenues		24,425		32,218
Cost of Revenue		8,781		9,010
Amortization of intangible assets		389		1,253
General and administrative		2,302		2,151
Selling and Marketing Expense		117		1,156
Research and Development Expense		0		(41)
Operating Expenses		11,589		13,529
Operating Income (Loss)		12,836		18,689
Nonoperating Income (Expense)		(12,761)		0
Discontinued Operation, Income (Loss) from Discontinued Operation, before Income Tax		75		18,689
Discontinued Operation, Tax Effect of Discontinued Operation		319		3,620
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax		(244)		15,069
Accrued Liabilities, Current	[1]	17,122			16,400
Liabilities, Other than Long-term Debt, Noncurrent		0			120
Liabilities		24,554			31,215
Accounts and Other Receivables, Net, Current		8,559			6,993
Inventory, Net		30,083			31,712
Prepaid and other current assets		8,859			7,192
Property and equipment, net		2,908			2,960
Royalty rights		262,021			266,196
Intangible Assets, Net (Excluding Goodwill)		9,723			10,112
Other Assets		1,773			1,819
Loss on classification as held for sale		(12,483)			0
Assets		332,748			$ 351,453
Product Revenue [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		5,985		6,726
Product Revenue [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		15,031		19,961
Acquired rights [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from Contract with Customer, Including Assessed Tax		$ 9,394		$ 12,257

[1] unaudited

[2] Note 1