Debt (Tables)

6 Months Ended

Jun. 30, 2021

Debt Disclosure [Abstract]

Convertible Debt [Table Text Block]

Convertible senior notes consist of the following (in thousands):

	June 30, 2021		December 31, 2020
3.25% convertible senior notes due 2023*	$	27,391	$	34,134

* The amounts presented for the 3.25% convertible senior notes due 2023 within the table represent the fair value as of June 30, 2021 and December 31, 2020 (see Note 16 - Fair Value Measurements). The principal amount of these notes is $13.3 million and $22.9 million as of June 30, 2021 and December 31, 2020, respectively. The accrued, but unpaid, PIK interest is $0.7 million and $0.9 million as of June 30, 2021 and December 31, 2020, respectively.

Schedule of Debt [Table Text Block]

Term loan consists of the following (in thousands):

	June 30, 2021							December 31, 2020
			Debt Discount/							Debt Discount/
	Principal		Issuance			Net		Principal		Issuance			Net
	Amount		Costs*			Amount		Amount**		Costs*			Amount
2019 Recap Term Loan	$	—	$	—		$	—	$	119,801	$	(8,471	)	$	111,330
2021 BSP Term Loan		99,000		(3,265	)		95,735		—		—			—

* The term loan was valued using the discounted cash flow method to determine the implied debt discount. The debt discount and issuance costs are being amortized over the life of the term loan.

** The amount presented excludes accrued, but unpaid, PIK interest of $4.7 million as of December 31, 2020.