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Quarterly Results of Operations (Tables)
12 Months Ended
Dec. 31, 2017
Quarterly Financial Information Disclosure [Abstract]  
Summary of Quarterly Results of Operations

 

 

2017

 

 

2016

 

 

 

First

 

 

Second

 

 

Third

 

 

Fourth

 

 

First

 

 

Second

 

 

Third

 

 

Fourth

 

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

Quarter

 

 

 

(in thousands, except per share data)

 

Operating revenues

 

$

301,207

 

 

$

316,089

 

 

$

322,097

 

 

$

334,779

 

 

$

278,828

 

 

$

290,596

 

 

$

288,433

 

 

$

292,812

 

Cost of revenues

 

 

67,521

 

 

 

68,595

 

 

 

68,491

 

 

 

69,306

 

 

 

63,172

 

 

 

62,130

 

 

 

62,986

 

 

 

63,819

 

Selling and marketing

 

 

43,014

 

 

 

41,594

 

 

 

44,918

 

 

 

47,771

 

 

 

41,689

 

 

 

41,854

 

 

 

41,514

 

 

 

41,609

 

Research and development

 

 

18,977

 

 

 

18,203

 

 

 

17,983

 

 

 

20,721

 

 

 

18,928

 

 

 

18,566

 

 

 

18,750

 

 

 

18,960

 

General and administrative

 

 

21,004

 

 

 

21,448

 

 

 

22,103

 

 

 

23,348

 

 

 

21,890

 

 

 

22,019

 

 

 

21,859

 

 

 

21,467

 

Amortization of intangible assets

 

 

11,251

 

 

 

11,122

 

 

 

10,614

 

 

 

11,560

 

 

 

11,840

 

 

 

11,943

 

 

 

11,752

 

 

 

11,498

 

Depreciation and amortization of

   property, equipment and

   leasehold improvements

 

 

8,838

 

 

 

9,159

 

 

 

9,325

 

 

 

8,118

 

 

 

8,168

 

 

 

8,393

 

 

 

8,312

 

 

 

9,447

 

Total operating expenses

 

 

170,605

 

 

 

170,121

 

 

 

173,434

 

 

 

180,824

 

 

 

165,687

 

 

 

164,905

 

 

 

165,173

 

 

 

166,800

 

Operating income

 

 

130,602

 

 

 

145,968

 

 

 

148,663

 

 

 

153,955

 

 

 

113,141

 

 

 

125,691

 

 

 

123,260

 

 

 

126,012

 

Interest income

 

 

(932

)

 

 

(1,310

)

 

 

(1,835

)

 

 

(2,237

)

 

 

(621

)

 

 

(585

)

 

 

(799

)

 

 

(901

)

Interest expense

 

 

29,024

 

 

 

29,027

 

 

 

29,020

 

 

 

29,027

 

 

 

22,904

 

 

 

22,918

 

 

 

26,790

 

 

 

29,039

 

Other expense (income)

 

 

885

 

 

 

740

 

 

 

675

 

 

 

205

 

 

 

81

 

 

 

2,814

 

 

 

(253

)

 

 

779

 

Other expense (income), net

 

 

28,977

 

 

 

28,457

 

 

 

27,860

 

 

 

26,995

 

 

 

22,364

 

 

 

25,147

 

 

 

25,738

 

 

 

28,917

 

Income from continuing operations

   before provision for income taxes

 

 

101,625

 

 

 

117,511

 

 

 

120,803

 

 

 

126,960

 

 

 

90,777

 

 

 

100,544

 

 

 

97,522

 

 

 

97,095

 

Provision for income taxes

 

 

28,674

 

 

 

36,245

 

 

 

35,650

 

 

 

62,358

 

 

 

30,410

 

 

 

33,587

 

 

 

32,241

 

 

 

28,845

 

Net income

 

$

72,951

 

 

$

81,266

 

 

$

85,153

 

 

$

64,602

 

 

$

60,367

 

 

$

66,957

 

 

$

65,281

 

 

$

68,250

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Earnings per basic common share

 

$

0.80

 

 

$

0.90

 

 

$

0.94

 

 

$

0.72

 

 

$

0.61

 

 

$

0.69

 

 

$

0.69

 

 

$

0.73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Earnings per diluted common share

 

$

0.80

 

 

$

0.89

 

 

$

0.93

 

 

$

0.70

 

 

$

0.60

 

 

$

0.69

 

 

$

0.68

 

 

$

0.73

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Weighted average shares outstanding

   used in computing per share data

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Basic

 

 

90,708

 

 

 

90,404

 

 

 

90,112

 

 

 

90,130

 

 

 

99,425

 

 

 

96,412

 

 

 

94,823

 

 

 

93,327

 

Diluted

 

 

91,624

 

 

 

91,708

 

 

 

91,868

 

 

 

92,467

 

 

 

99,998

 

 

 

96,888

 

 

 

95,473

 

 

 

93,845