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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2016
Stockholders' Equity Note [Abstract]  
Schedule of Dividends Declared and Paid
The table below summarizes the regular quarterly dividends declared and paid during the year ended December 31, 2016:
(In thousands, except per share data)
Per Share
 
Record Date
 
Payment Date
 
Total Paid
First Quarter 2016
$
0.30

 
04/01/16
 
04/15/16
 
$
7,344

Second Quarter 2016
0.30

 
06/06/16
 
06/17/16
 
7,363

Third Quarter 2016
0.30

 
08/19/16
 
09/02/16
 
7,371

Fourth Quarter 2016
0.50

 
11/28/16
 
12/09/16
 
12,359

Total 2016
$
1.40

 
 
 
 
 
$
34,437
Schedule of Stock-Based Compensation
Stock-based compensation resulted in charges to operations as follows for the years ended December 31:
(In thousands)
2016
 
2015
 
2014
Stock options
$
444

 
$
974

 
$
1,412

Deferred stock units
7,830

 
7,023

 
4,343

Restricted stock
1,770

 
1,031

 
910

Stock awards
5,376

 
5,015

 
4,152

Stock-based compensation expense
$
15,420

 
$
14,043

 
$
10,817
Schedule of Stock Options
Transactions in stock options under the Equity Plan are summarized as follows:
 
Number of Option Shares
Weighted Average
Exercise Price
Outstanding at December 31, 2013
723,661

$
15.46

Exercised
(258,530
)
$
12.89

Forfeited
(11,800
)
$
16.93

Reduction for special cash dividend
—

$
(2.00
)
Outstanding at December 31, 2014
453,331

$
16.89

Exercised
(214,601
)
$
14.48

Forfeited
(26,700
)
$
14.30

Reduction for special cash dividend
—

$
(2.00
)
Outstanding at December 31, 2015
212,030

$
15.38

Exercised
(183,600
)
$
15.10

Forfeited
(1,550
)
$
17.17

Outstanding at December 31, 2016 (a)
26,880

$
17.17

Exercisable at December 31, 2016 (a)
26,880

$
17.17
Schedule Exercise of Stock Options
Additional information for the exercise of stock options is as follows for the years ended December 31:
(In thousands)
2016
 
2015
 
2014
Intrinsic value of stock options exercised
$
13,204

 
$
9,424

 
$
7,860

Cash receipts from stock options exercised
$
2,772

 
$
3,280

 
$
3,333

Income tax benefits from stock option exercises
$
4,435

 
$
2,885

 
$
3,660

Grant date fair value of stock options vested
$
506

 
$
1,055

 
$
1,561
Schedule of Deferred Stock Units Transactions
Transactions in DSUs and RSUs under the Equity Plan are summarized as follows:
 
Number of Shares
Weighted Average Price
Outstanding at December 31, 2013
692,961

$
30.26

Issued
56,212

$
46.08

Granted
187,490

$
46.94

Dividend equivalents
27,532

$
50.45

Forfeited
(38,855
)
$
29.83

Exercised
(187,052
)
$
29.90

Outstanding at December 31, 2014
738,288

$
36.96

Issued
54,982

$
47.51

Granted
90,184

$
60.22

Dividend equivalents
20,922

$
59.94

Forfeited
(23,604
)
$
44.78

Exercised
(353,259
)
$
32.62

Outstanding at December 31, 2015
527,513

$
44.94

Issued
10,742

$
72.01

Granted
173,097

$
54.67

Dividend equivalents
9,075

$
87.01

Forfeited
(10,893
)
$
48.98

Exercised
(203,087
)
$
43.55

Outstanding at December 31, 2016
506,447

$
50.00
Schedule of Restricted Stock Grants
Restricted stock grants, which were all made to directors, were as follows (in thousands except share and per share amounts):
 
2016
 
2015
 
2014
Granted
17,439

 
20,558

 
19,439

Weighted average stock price
$
74.55

 
$
59.60

 
$
46.82

Fair value of stock granted
$
1,300

 
$
1,220

 
$
910
Schedule of Stock Awards
Transactions in stock awards under the Equity Plan are summarized as follows:
 
Number of Shares
Stock Price
Outstanding at December 31, 2013
193,602

$
30.84

Granted
103,500

$
51.20

Dividend equivalents
7,675

$
50.45

Exercised
(31,959
)
$
26.88

Outstanding at December 31, 2014
272,818

$
39.03

Granted
96,010

$
60.29

Dividend equivalents
8,992

$
59.94

Forfeited
(16,534
)
$
60.29

Exercised
(98,830
)
$
29.70

Outstanding at December 31, 2015
262,456

$
49.36

Granted
86,918

$
54.47

Dividend equivalents
3,811

$
88.04

Forfeited
(10,832
)
$
53.95

Exercised
(109,731
)
$
39.94

Outstanding at December 31, 2016
232,622

$
55.60
Schedule of Computation of Basic and Diluted Earnings Per Share
The following reconciliation details the denominator used in the computation of basic and diluted earnings per share for the years ended December 31:
(In thousands)
2016
 
2015
 
2014
Weighted average shares outstanding for basic earnings per share
24,631

 
24,295

 
23,911

Common stock equivalents pertaining to stock-based awards
302

 
355

 
423

Weighted average shares outstanding for diluted earnings per share
24,933

 
24,650

 
24,334