Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

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, plant and equipment consisted of the following:



	As of December 31,
(in thousands)	2015		2014

Land and improvements	$	59,176	$	30,047
Buildings and improvements	141,510		101,252
Equipment	303,867		235,715
Computer software	17,664		17,819
Total	522,217		384,833
Accumulated depreciation	251,170		226,992
Net property, plant and equipment	$	271,047	$	157,841

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



(in thousands)

January 1, 2013	$	1,815
Charged to revenues, costs and expenses	167
Amounts charged off, net	(862		)
Balance as of December 31, 2013	1,120
Charged to revenues, costs and expenses	1,073
Amounts charged off, net	(803		)
Balance as of December 31, 2014	1,390
Charged to revenues, costs and expenses	1,412
Amounts charged off, net	(1,192		)
Balance as of December 31, 2015	$	1,610

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



	For the years ended December 31,
(in thousands)	2015			2014			2013

Numerator (for basic and diluted earnings per share)
Net (loss) income	$	(82,477	)	$	10,529		$	(474	)
Less income allocated to RSUs	—			(240		)	—
Numerator for basic and diluted earnings per share	$	(82,477	)	$	10,289		$	(474	)
Denominator
Basic weighted-average shares outstanding	77,373			56,342			56,516
Effect of dilutive securities:
Stock options held by employees and directors	—			897			—
Diluted weighted-average shares outstanding	77,373			57,239			56,516
Anti-dilutive securities⁽¹⁾	1,907			—			4,957


⁽¹⁾	Amount outstanding at Balance Sheet date, before application of the treasury stock method and not weighted for period outstanding.