Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

The following table sets forth our assets and liabilities that are measured at fair value within the fair value hierarchy (in thousands):

			Level 1		Level 2		Level 3
			Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
	Total
Fair value as of December 31, 2021:
Asset:
Short-term government securities (cash and cash equivalents)	$	158,197	$	158,197	$	—	$	—
Interest rate swaps (prepaids and other assets)	2,485		—		2,485		—
Total assets	$	160,682	$	158,197	$	2,485	$	—
Liabilities:
Interest rate swaps (other liabilities)	$	459	$	—	$	459	$	—
Total liabilities	$	459	$	—	$	459	$	—

			Level 1		Level 2		Level 3
			Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
	Total
Fair value as of December 31, 2020:
Assets:
Short-term government securities (cash and cash equivalents)	$	87,081	$	87,081	$	—	$	—
Total assets	$	87,081	$	87,081	$	—	$	—
Liabilities:
Interest rate swaps (other liabilities)	$	3,358	$	—	$	3,358	$	—
Total liabilities	$	3,358	$	—	$	3,358	$	—

Fair Value Measurements, Nonrecurring

The following table sets forth our assets that are measured at fair value on a nonrecurring basis within the fair value hierarchy (in thousands):

			Level 1		Level 2		Level 3
			Quoted Prices in Active Markets for Identical Assets or Liabilities		Significant Observable Inputs		Significant Unobservable Inputs
	Total
Fair value as of December 31, 2021:
Asset:
Long-lived assets	$	29,460	$	—	$	—	$	29,460
Fair value as of December 31, 2020:
Asset:
Long-lived assets	$	46,950	$	—	$	—	$	46,950
Fair value as of March 31, 2020:
Asset:
Long-lived assets	$	60,000	$	—	$	—	$	60,000
Fair value as of December 31, 2019:
Asset:
Long-lived assets	$	10,000	$	—	$	—	$	10,000

Fair Value Measurement Inputs and Valuation Techniques

The table below summarizes the terminal capitalization rate and discount rate used:

	December 31, 2021		December 31, 2020		March 31, 2020
Terminal capitalization rate	8.3	%	7.8	%	7.8	%
Discount rate	9.3	%	8.5	%	8.5	%

The table below summarizes the terminal capitalization rate and discount rate used:

	December 31, 2019
Terminal capitalization rate	12.0	%
Discount rate	13.0	%

Schedule of Carrying Values and Estimated Fair Values of Debt Instruments

The estimated fair value and recorded value of our debt as of December 31, 2021 and 2020 were as follows (in thousands):

	2021		2020
Level 1 Quoted Prices in Active Markets for Identical Assets or Liabilities	$	—	$	—
Level 2 Significant Observable Inputs	1,079,234		1,207,531
Level 3 Significant Unobservable Inputs	366,103		432,272
Total fair value of debt	$	1,445,337	$	1,639,803
Recorded value of debt	$	1,397,076	$	1,567,886