Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Activity in the allowance for doubtful accounts

The activity in the allowance for doubtful accounts during the years ended December 31, 2014, 2013 and 2012 was as follows:

					Write Off of
	Balance		Charged to		Uncollectible		Balance at
	at Beginning		Costs and		Accounts, Net of		End of
Year Ended	of Period		Expenses		Recoveries		Period
	(In thousands)
December 31, 2014	$	578	$	139	$	(322)	$	395
December 31, 2013	$	577	$	293	$	(292)	$	578
December 31, 2012	$	794	$	134	$	(351)	$	577

Property and equipment

Property and equipment consisted of the following:

	Estimated	December 31,
	Useful Life	2014		2013
		(In thousands)
Land and land improvements	—	$	11,026	$	10,984
Buildings	31.5 years		33,275		32,378
Towers and antennae	7-15 years		26,191		25,761
Equipment	3-15 years		79,216		77,908
Furniture, fixtures and leasehold improvements	7-20 years		8,104		7,926
Vehicles	5 years		3,790		3,805
			161,602		158,762
Accumulated depreciation			(106,415)		(102,425)
Net property and equipment		$	55,187	$	56,337

Computation of basic and diluted earnings per share

The following table sets forth the computation of basic and diluted earnings per share:

	Years Ended December 31,
	2014		2013		2012
	(In thousands, except per share data)
Numerator:
Net income	$	14,904	$	15,273	$	17,925
Less: Net income allocated to unvested participating securities		234		135		—
Net income available to common stockholders	$	14,670	$	15,138	$	17,925
Denominator:
Denominator for basic earnings per share-weighted average shares		5,700		5,681		5,659
Effect of dilutive securities:
Stock options		53		64		13
Denominator for diluted earnings per share — adjusted weighted-average shares and assumed conversions		5,753		5,745		5,672
Basic earnings per share	$	2.57	$	2.66	$	3.17
Diluted earnings per share	$	2.55	$	2.64	$	3.16