Notes Payable, Long-Term Debt and Other Obligations (Non-Cash Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Amortization of debt discount, net	$ 4,600	$ 8,528
Amortization of debt issuance costs	1,158	1,185
Non-cash interest expense	$ 5,758	$ 9,713

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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