Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Measured at Fair Value Based on Three-Tier Fair Value Hierarchy

The Company's financial instruments not measured at fair value on a recurring basis were as follows:

	December 31, 2020								December 31, 2019
	Carrying		Fair Value						Carrying		Fair Value
(in thousands)	Value		Level 1		Level 2		Level 3		Value		Level 1		Level 2		Level 3
2020 Notes	n/a		n/a		n/a		n/a		$	43,785	$	—	$	66,844	$	—
2022 Notes	$	35,925	$	—	$	54,204	$	—	n/a		n/a		n/a		n/a
2024 Notes	$	93,582	$	—	$	125,953	$	—	$	88,629	$	—	$	131,887	$	—
French and other loans	$	21,835	$	—	$	21,835	$	—	$	17,153	$	—	$	17,153	$	—