Income Taxes (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Disclosure [Abstract]
Current State and Local Tax Expense (Benefit)	$ 445	$ (809)	$ (2,324)
Effective Income Tax Rate Reconciliation, Tax Expense (Benefit), Share-based Payment Arrangement, Amount	1,688	1,059	1,447
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Research and Development, Amount	0	(978)	(1,993)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount	(35,276)	25,928	(126,634)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	26,065	(25,315)	(47,479)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	0	0	169,464
Effective Income Tax Rate Reconciliation Symphony Icon FV Adjustment	0	0	735
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	0	0	(189)
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	1,064	115	(372)
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Other, Amount	0	0	(5,316)
Income Tax Benefit	$ (6,014)	$ 0	$ (12,661)
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	21.00%	21.00%	35.00%