Debt - Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Long-term debt
Long term debt and finance lease obligations, including current maturities	$ 44,956	$ 44,935
Less current portion of long term debt	(15,534)	(15,836)
Long-term debt, net of current	29,422	29,099
Debt instrument, unamortized discount
Unamortized discount on debt	1,635
Debt issued to entities affiliated with Deerfield \| Senior Secured Credit Facility
Long-term debt
Long term debt and finance lease obligations, including current maturities	44,115	43,768
Debt instrument, unamortized discount
Unamortized discount on debt	1,635	1,982
Financial lease obligations, maturing through May 2024 \| Senior Secured Credit Facility
Long-term debt
Long term debt and finance lease obligations, including current maturities	$ 841	$ 1,167

Amount, after accumulated amortization, of debt discount.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28541-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant