Long-Term Debt Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Sep. 30, 2018	Mar. 31, 2018
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 60,000	$ 35,000
Prepayment allowed per debt agreement	$ 2,000
Prepayment penalty percentage	1.50%
Final payment fee percentage	3.00%
Interest expense	$ (7,163)	(2,545)
Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net	(1,695)	(3,110)
Long-term Debt	58,305	31,890
Amortization of debt issuance costs	948	560
2018 Term A Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	0	20,000			$ 20,000
2018 Term B Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 0	15,000		$ 15,000
2018 Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity					$ 45,000
Interest rate, thirty-day LIBOR plus stated percentage			8.84%
Debt Instrument, Interest Rate, Stated Percentage			6.75%
Debt Instrument, Payment Terms	P24M
Amended Loan and Security Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity			$ 85,000
Debt Instrument, Interest Rate, Stated Percentage	6.25%
Debt Instrument, Basis Spread on Variable Rate	2.43%
Interest rate, stated percentage plus greater of (a) 2.43% or (b) thirty-day LIBOR	8.68%
Term A Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 60,000	$ 0	60,000
Debt Issuance Costs, Gross	$ 1,900
Debt Instrument, Payment Terms	27
Term B Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			15,000
Debt Instrument, Payment Terms	30
Term C Loan [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount			$ 10,000
Debt Instrument, Payment Terms	21
2018 Term A & B Loans [Member]
Debt Instrument [Line Items]
Debt Instrument, Fee	2.3