Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net operating loss carryforwards:
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 60,000	$ 68,000	$ 61,000
Effective income tax rate reconciliation, change in enacted tax rate, amount	69,378,000
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Share-based Payment Arrangement, Amount	5,000,000	16,000,000	11,000,000
Deferred tax assets	108,347,000	102,560,000
Deferred Tax Assets, Valuation Allowance, Noncurrent	19,978,000	23,815,000
Uncertain Tax Benefits	914,000	1,107,000	1,086,000
Interest expense	32,821,000	$ 15,068,000	$ 14,868,000
Federal
Net operating loss carryforwards:
Net operating loss carryforwards	509,313,000
State
Net operating loss carryforwards:
Net operating loss carryforwards	237,667,000
Foreign Tax Authority
Net operating loss carryforwards:
Net operating loss carryforwards	$ 165,104,000