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Basis of Presentation and Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]  
Components of Accumulated Other Comprehensive Income
The components of Accumulated other comprehensive income included in Stockholders' Equity are as follows:
 
 
June 30,
2018
 
December 31,
2017
 
 
(In thousands)
Currency translation adjustments
 
$
6,415

 
$
13,148

Net unrealized gain on derivative financial instruments
 
384

 
353

Unrecognized prior service cost on benefit obligations
 
(5,452
)
 
(6,237
)
Net unrealized gain (loss) on available-for-sale investments
 
(99
)
 
2,190

Accumulated other comprehensive income
 
$
1,248

 
$
9,454
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income
The amounts reclassified out of Accumulated other comprehensive income by component and the affected condensed consolidated statements of income line items are as follows:
 
 
Three Months Ended
June 30,
 
Six Months Ended
June 30,
 
 
 
 
2018
 
2017
 
2018
 
2017
 
 
Accumulated Other Comprehensive Income (Loss) Component Recognized
 
(In thousands)
 
Line Item Presented
Realized gain (loss) on derivative financial instruments
 
$
7

 
$
(9
)
 
$
(4
)
 
$
(13
)
 
Revenues
 
 
(92
)
 
237

 
28

 
291

 
Cost of operations
 
 
(85
)
 
228

 
24

 
278

 
Total before tax
 
 
21

 
(58
)
 
(9
)
 
(71
)
 
Provision for Income Taxes
 
 
$
(64
)
 
$
170

 
$
15

 
$
207

 
Net Income
Amortization of prior service cost on benefit obligations
 
$
(488
)
 
$
(446
)
 
$
(993
)
 
$
(892
)
 
Other – net
 
 
25

 
157

 
208

 
313

 
Provision for Income Taxes
 
 
$
(463
)
 
$
(289
)
 
$
(785
)
 
$
(579
)
 
Net Income
Realized gain on investments
 
$
—

 
$
126

 
$
—

 
$
148

 
Other – net
 
 
—

 
(6
)
 
—

 
(14
)
 
Provision for Income Taxes
 
 
$
—

 
$
120

 
$
—

 
$
134

 
Net Income
Total reclassification for the period
 
$
(527
)
 
$
1

 
$
(770
)
 
$
(238
)
 
 
Schedule of Changes in Carrying Amount of Debt Issuance Costs
The following summarizes the changes in the carrying amount of our deferred debt issuance costs.
 
 
Six Months Ended
June 30,
 
 
2018
 
2017
 
 
(In thousands)
Balance at beginning of period
 
$
4,202

 
$
5,892

Additions
 
9,443

 
—

Interest expense (1)
 
(3,273
)
 
(850
)
Balance at end of period
 
$
10,372

 
$
5,042

(1)
Includes the recognition of prior deferred debt issuance costs associated with the Former Credit Facility of $2.4 million for the six months ended June 30, 2018.
Restricted Cash and Cash Equivalents
The following table provides a reconciliation of cash and cash equivalents and restricted cash and cash equivalents within our condensed consolidated balance sheets to the totals presented in our condensed consolidated statement of cash flows:
 
 
June 30,
2018
 
December 31,
2017
 
 
(In thousands)
Cash and cash equivalents
 
$
317,624

 
$
203,404

Restricted cash and cash equivalents
 
5,870

 
7,105

Restricted cash and cash equivalents included in Other Assets
 
2,647

 
2,635

Total cash and cash equivalents and restricted cash and cash equivalents as presented in our condensed consolidated statement of cash flows
 
$
326,141

 
$
213,144
Restricted Cash and Cash Equivalents
The following table provides a reconciliation of cash and cash equivalents and restricted cash and cash equivalents within our condensed consolidated balance sheets to the totals presented in our condensed consolidated statement of cash flows:
 
 
June 30,
2018
 
December 31,
2017
 
 
(In thousands)
Cash and cash equivalents
 
$
317,624

 
$
203,404

Restricted cash and cash equivalents
 
5,870

 
7,105

Restricted cash and cash equivalents included in Other Assets
 
2,647

 
2,635

Total cash and cash equivalents and restricted cash and cash equivalents as presented in our condensed consolidated statement of cash flows
 
$
326,141

 
$
213,144
Summary of Changes in Carrying Amount of Accrued Warranty Expense
The following summarizes the changes in the carrying amount of our Accrued warranty expense:
 
 
Six Months Ended
June 30,
 
 
2018
 
2017
 
 
(In thousands)
Balance at beginning of period
 
$
13,428

 
$
11,477

Additions
 
810

 
667

Expirations and other changes
 
(709
)
 
(84
)
Payments
 
(347
)
 
(16
)
Translation
 
(360
)
 
173

Balance at end of period
 
$
12,822

 
$
12,217