Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

A rollforward of the allowance for doubtful accounts is as follows:


(in thousands)

January 1, 2019	$	4,221
Charged to costs and expenses	1,823
Amounts charged off, net	(2,698)
Balance as of December 31, 2019	3,346
Charged to costs and expenses	3,305
Amounts charged off, net	(3,208)
Balance as of December 31, 2020	3,443
Charged to costs and expenses	1,987
Amounts charged off, net	(1,174)
Balance as of December 31, 2021	$	4,256

We compute depreciation using the straight-line method over estimated useful lives as follows:


Buildings and improvements			15 to 45 years
Leasehold improvements			Shorter of term of lease or useful life
Broadcast transmission towers and related equipment			15 to 35 years
Other broadcast and program production equipment			3 to 15 years
Computer hardware			3 to 5 years
Office and other equipment			3 to 10 years

Property and equipment consisted of the following:

The following table presents information about basic and diluted weighted-average shares outstanding:


	For the years ended December 31,
(in thousands)	2021		2020		2019

Numerator (for basic and diluted earnings per share)
Income (loss) from continuing operations, net of tax	$	115,899	$	153,564	$	(1,913)

Less income allocated to RSUs	(1,855)		(3,711)		—
Less preferred stock dividends	(49,372)		—		—
Numerator for basic and diluted earnings per share	$	64,672	$	149,853	$	(1,913)
Denominator
Basic weighted-average shares outstanding	82,327		81,418		80,826
Effect of dilutive securities:
Restricted stock units	941		413		—
Common stock warrant	4,711		—		—
Diluted weighted-average shares outstanding	87,979		81,831		80,826