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Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2019
Stockholders' Equity Note [Abstract]  
Schedules of shares purchased under stock purchase plan
The following table shows shares purchased under the respective stock purchase plans:
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
 
 
Shares
 
$
 
Shares
 
$
 
Shares
 
$
2019 Stock Purchase Plan
 
79,676

 
$
4.9

 
 
 
 
 
 
 
 
2018 Stock Purchase Plan
 


 


 
124,434

 
$
9.3

 


 


2017 Stock Purchase Plan
 


 


 


 


 
—

 
—

2016 Stock Purchase Plan
 


 


 


 


 
85,354

 
$
6.8
Schedule of Accumulated Other Comprehensive Income (Loss)
The following table presents changes in accumulated other comprehensive income (loss):
 
 
Year Ended December 31,
 
 
2019
 
2018
 
2017
 
 
Pretax
Amount
 
Tax
Effect
 
Net
Amount
 
Pretax
Amount
 
Tax
Effect
 
Net
Amount
 
Pretax
Amount
 
Tax
Effect
 
Net
Amount
Unrealized foreign currency translation gains (losses)
 
$
(3.5
)
 
$
—

 
$
(3.5
)
 
$
(7.9
)
 
$
(0.1
)
 
$
(8.0
)
 
$
20.0

 
$
—

 
$
20.0

Adjustment to pension and other benefit liabilities (a)
 
(6.4
)
 
1.7

 
$
(4.7
)
 
(4.4
)
 
1.1

 
(3.3
)
 
(13.8
)
 
2.9

 
(10.9
)
Unrealized loss on "available-for-sale" securities (b)
 
—

 
—

 
—

 
—

 
—

 
—

 
(0.4
)
 
0.1

 
(0.3
)
Other comprehensive income (loss)
 
$
(9.9
)
 
$
1.7

 
$
(8.2
)
 
$
(12.3
)
 
$
1.0

 
$
(11.3
)
 
$
5.8

 
$
3.0

 
$
8.8


_______________________

(a)
In conjunction with the Tax Act, the Company early adopted in the fourth quarter of 2017 ASU 2018-02, Reclassification of Certain Tax Effects From Accumulated Other Comprehensive Income (Topic 740) and accordingly reclassified $10.9 million from AOCI to retained earnings to address the stranded tax effects resulting from the effect of lower tax rates in the Tax Act on items with AOCI.
(b)
The Company adopted ASU 2016-01, Financial Instruments-Overall: Recognition and Measurement of Financial Assets and Financial Liabilities as of January 1, 2018. As a result of the adoption, the Company reclassified $0.3 million of unrealized losses (net of $0.1 million income tax effect) on "available-for-sale" securities to beginning retained earnings.

The components of accumulated other comprehensive income (loss), net of applicable income taxes are as follows:
 
 
December 31,
 
 
2019
 
2018
Net loss from pension and other postretirement benefit liabilities, net of income tax benefits of $31.6 million and $29.9 million, respectively
 
$
(94.3
)
 
$
(89.6
)
Unrealized foreign currency translation losses, net of income tax benefits of $0.3 and $0.3, respectively
 
(19.0
)
 
(15.5
)
AOCI
 
$
(113.3
)
 
$
(105.1
)