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Stock-based Compensation (Tables)
 12 Months Ended
Sep. 30, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of allocation of share-based compensation costs by plan
A summary of the expense related to stock-based compensation by award type is as follows for the periods presented:
 
Fiscal Year Ended September 30,
(In thousands)
2018
 
2017
 
2016
Stock options expense
$
225

 
$
274

 
$
534

Restricted stock awards expense
10,033

 
7,885

 
7,425

Before tax stock-based compensation expense
10,258

 
8,159

 
7,959

Tax benefit
(2,622
)
 
(2,917
)
 
(2,832
)
After tax stock-based compensation expense
$
7,636

 
$
5,242

 
$
5,127
Schedule of assumptions for stock option activity
 
Fiscal Year Ended September 30,
 
2018
 
2017
 
2016
Expected volatility
21.1% - 61.2%

 
32.6% - 66.0%

 
29.9% - 151.2%

Risk-free interest rate
1.81
%
 
1.30
%
 
1.21
%
Dividend yield
—

 
—

 
—

Grant-date stock price
$
20.50

 
$
12.51

 
$
14.24

We used the following valuation assumptions for stock options granted for the periods presented:
 
Fiscal Year Ended September 30,
 
2018
 
2017
 
2016
Expected life of options
5.0 years

 
5.4 years

 
4.9 years

Expected volatility
44.71
%
 
50.10
%
 
46.49
%
Expected dividends
—

 
—

 
—

Weighted-average risk-free interest rate
2.10
%
 
1.85
%
 
1.36
%
Weighted-average fair value
$
8.30

 
$
5.83

 
$
4.03
Schedule of stock options and SSARs outstanding
Activity related to stock options for the periods presented is as follows:
 
2018
 
2017
 
2016
 
Shares
 
Weighted-
Average
Exercise
Price
 
Shares
 
Weighted-
Average
Exercise
Price
 
Shares
 
Weighted-
Average
Exercise
Price
Outstanding at beginning of period
593,753

 
$
14.76

 
672,669

 
$
16.49

 
643,907

 
$
18.13

Granted
25,230

 
19.99

 
29,410

 
12.50

 
125,449

 
9.19

Exercised
(8,411
)
 
7.52

 
(2,313
)
 
10.80

 
—

 
—

Expired
(61,967
)
 
23.19

 
(84,976
)
 
28.45

 
(86,606
)
 
19.70

Cancelled
—

 
—

 
(480
)
 
23.65

 
—

 
—

Forfeited
(15,553
)
 
10.46

 
(20,557
)
 
11.97

 
(10,081
)
 
10.98

Outstanding at end of period
533,052

 
$
14.26

 
593,753

 
$
14.76

 
672,669

 
$
16.49

Exercisable at end of period
479,538

 
$
14.03

 
476,606

 
$
15.91

 
503,594

 
$
17.76

Vested or expected to vest in the future
533,052

 
$
14.26

 
585,186

 
$
14.83

 
672,669

 
$
16.49
Schedule of stock options and SSARS outstanding and exercisable
The following table summarizes information about stock options outstanding and exercisable as of September 30, 2018:
 
Stock Options Outstanding
 
Stock Options Exercisable
Range of Exercise Price
Number Outstanding
 
Weighted-Average Contractual Remaining Life (Years)
 
Weighted-Average Exercise Price
 
Number Exercisable
 
Weighted-Average Contractual Remaining Life (Years)
 
Weighted-Average Exercise Price
$1 - $10
152,004

 
2.6
 
$
9.77

 
152,004

 
2.6
 
$
9.77

$11 - $15
207,451

 
3.2
 
13.33

 
177,617

 
2.7
 
13.37

$16 - $20
173,597

 
3.7
 
19.30

 
149,917

 
3.1
 
19.12

$1 - $20
533,052

 
3.2
 
$
14.26

 
479,538

 
2.8
 
$
14.03
Schedule of stock options exercised and vested
Information pertaining to the intrinsic value of options exercised and the fair market value of options that vested is below:
 
Fiscal Year Ended September 30,
(In thousands)
2018
 
2017
 
2016
Intrinsic value of options exercised
$
76

 
$
13

 
$
—

Fair market value of options vested
$
296

 
$
482

 
$
681
Schedule of nonvested stock awards and performance shares
Activity relating to all restricted stock awards for the periods presented is as follows:
 
Year Ended September 30, 2018
 
Performance-Based
 
Time-Based
 
Total
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
Beginning of period
668,766

 
$
15.72

 
872,181

 
$
16.47

 
1,540,947

 
$
16.15

Granted
165,085

 
22.40

 
277,165

 
18.98

 
442,250

 
20.26

Vested
—

 
—

 
(690,922
)
 
17.38

 
(690,922
)
 
17.38

Forfeited
(189,066
)
 
18.98

 
(26,641
)
 
17.02

 
(215,707
)
 
18.74

End of period
644,785

 
$
16.47

 
431,783

 
$
16.60

 
1,076,568

 
$
16.53


 
Year Ended September 30, 2017
 
Performance-Based
 
Time-Based
 
Total
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
Beginning of period
448,693

 
$
16.71

 
807,124

 
$
17.52

 
1,255,817

 
$
17.23

Granted
263,696

 
13.60

 
271,855

 
12.50

 
535,551

 
13.04

Vested
—

 
—

 
(189,029
)
 
15.52

 
(189,029
)
 
15.52

Forfeited
(43,623
)
 
13.11

 
(17,769
)
 
14.08

 
(61,392
)
 
13.39

End of period
668,766

 
$
15.72

 
872,181

 
$
16.47

 
1,540,947

 
$
16.15

 
Year Ended September 30, 2016
 
Performance-Based
 
Time-Based
 
Total
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
 
Shares
 
Weighted-
Average
Grant
Date Fair
Value
Beginning of period
252,022

 
$
16.34

 
704,261

 
$
18.97

 
956,283

 
$
18.27

Granted
231,624

 
15.43

 
259,819

 
14.04

 
491,443

 
14.69

Vested
—

 
—

 
(127,993
)
 
18.58

 
(127,993
)
 
18.58

Forfeited
(34,953
)
 
5.51

 
(28,963
)
 
16.78

 
(63,916
)
 
10.62

End of period
448,693

 
$
16.71

 
807,124

 
$
17.52

 
1,255,817

 
$
17.23