Income Taxes (Tables)

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of components of income tax provision (benefit)

Components of income tax provision (benefit) reflected in the consolidated statements of operations consist of the following (in thousands): 

	Year Ended December 31,
	2020		2019		2018
Current	$	(14,818)	$	4,374	$	4,830
Deferred	(3,883)		3,485		(2,430)
	$	(18,701)	$	7,859	$	2,400

Domestic	$	(15,074)	$	3,715	$	(3,161)
Foreign	(3,627)		4,144		5,561
	$	(18,701)	$	7,859	$	2,400

Schedule of components of income (loss) before income taxes

Components of income (loss) before income taxes are as follows (in thousands): 

	Year Ended December 31,
	2020		2019		2018
Domestic	$	(3,406)	$	2,219	$	(28,838)
Foreign	4,789		63,337		59,836
	$	1,383	$	65,556	$	30,998

Schedule of differences between income tax provision (benefit) at U.S. statutory rate and actual income tax provision (benefit)

The primary differences between the income tax provision (benefit) at the U.S. statutory rate and our actual income tax provision (benefit) are as follows: 

	Year Ended December 31,
	2020				2019				2018
Taxes at U.S. statutory rate	$	290	21.0	%	$	13,767	21.0	%	$	6,510	21.0	%
Foreign tax provision	(3,426)		(247.7)		(6,557)		(10.0)		(4,941)		(15.9)
CARES Act	(7,596)		(549.2)		—		—		—		—
Subsidiary restructuring	(8,333)		(602.5)		—		—		—		—
Other	364		26.2		649		1.0		831		2.6
Income tax provision (benefit)	$	(18,701)	(1,352.2)	%	$	7,859	12.0	%	$	2,400	7.7	%

Schedule of deferred income taxes

Deferred income taxes result from the effect of transactions that are recognized in different periods for financial and tax reporting purposes. The nature of these differences and the income tax effect of each are as follows (in thousands): 

	December 31,
	2020		2019
Deferred tax liabilities:
Depreciation	$	153,226	$	166,239
Debt discounts on 2022 Notes, 2023 Notes and 2026 Notes	9,298		4,643
Total deferred tax liabilities	$	162,524	$	170,882
Deferred tax assets:
Net operating losses	$	(59,794)	$	(64,178)
Reserves, accrued liabilities and other	(11,631)		(13,203)
Total deferred tax assets	(71,425)		(77,381)
Valuation allowance	19,722		18,631
Net deferred tax liabilities	$	110,821	$	112,132