Nature of Business (Tables)

12 Months Ended

Dec. 31, 2021

Summary of Warranty Expense and Write-Off Activity

A summary of warranty expense and write-off activity for the years ended December 31, 2021, 2020 and 2019 is as follows:

	Year Ended December 31,
(In thousands)	2021			2020			2019
Balance at beginning of period	$	7,146		$	8,394		$	8,623
Plus: Amounts charged to cost and expenses		855			1,538			4,569
Less: Deductions		(2,598	)		(2,786	)		(4,798	)
Balance at end of period	$	5,403		$	7,146		$	8,394

Changes in Accumulated Other Comprehensive (Loss) Income, Net of Tax by Components of Accumulated Other Comprehensive (Loss) Income

The following table presents changes in accumulated other comprehensive (loss) income, net of tax, by components of accumulated other comprehensive (loss) income for the years ended December 31, 2021, 2020 and 2019:

(In thousands)	Unrealized Gains (Losses) on Available- for-Sale Securities			Defined Benefit Plan Adjustments			Foreign Currency Adjustments			ASU 2018-02 Adoption (1)		Total
Balance as of December 31, 2018	$	(563	)	$	(8,041	)	$	(5,812	)	$	—	$	(14,416	)
Other comprehensive (loss) income before    reclassifications		573			(1,717	)		(1,480	)		—		(2,624	)
Amounts reclassified to retained earnings		—			—			—			385		385
Amounts reclassified from accumulated other    comprehensive (loss) income		(294	)		532			—			—		238
Balance as of December 31, 2019		(284	)		(9,226	)		(7,292	)		385		(16,417	)
Other comprehensive (loss) income before    reclassifications		749			(1,231	)		4,857			—		4,375
Amounts reclassified from accumulated other    comprehensive (loss) income		(433	)		836			—			—		403
Balance as of December 31, 2020		32			(9,621	)		(2,435	)		385		(11,639	)
Other comprehensive (loss) income before    reclassifications		(705	)		3,439			(3,699	)		—		(965	)
Amounts reclassified from accumulated other    comprehensive (loss) income		121			569			—			—		690
Balance as of December 31, 2021	$	(552	)	$	(5,613	)	$	(6,134	)	$	385	$	(11,914	)

(1)With the adoption of ASU 2018-02 on January 1, 2019, stranded tax effects related to the Tax Cuts and Jobs Act of 2017 were reclassified to retained earnings.

Reclassifications Out of Accumulated Other Comprehensive Income (Loss)

The following tables present the details of reclassifications out of accumulated other comprehensive (loss) income for the years ended December 31, 2021, 2020 and 2019:

(In thousands)	For the year ended December 31,
Details about Accumulated Other Comprehensive (Loss) Income Components	2021			2020			2019			Affected Line Item in the Statement Where Net (Loss) Income Is Presented
Unrealized (loss) gains on available-for-sale securities:
Net realized (loss) gain on sales of securities	$	(164	)	$	585		$	397		Net investment gain
Defined benefit plan adjustments – actuarial losses		(825	)		(1,212	)		(771	)	(1)
Total reclassifications for the period, before tax		(989	)		(627	)		(374	)
Tax benefit		299			224			136
Total reclassifications for the period, net of tax	$	(690	)	$	(403	)	$	(238	)

(1)Included in the computation of net periodic pension cost. See Note 15 for additional information.

Tax Effects Related to the Change in Each Component of Other Comprehensive (Loss) Income

The following tables present the tax effects related to the change in each component of other comprehensive (loss) income for the years ended December 31, 2021, 2020 and 2019:

	2021
(In thousands)	Before-Tax Amount			Tax (Expense) Benefit			Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities	$	(953	)	$	248		$	(705	)
Reclassification adjustment for amounts related to available-for-sale investments included in net income (loss)		164			(43	)		121
Defined benefit plan adjustments		4,984			(1,545	)		3,439
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net income (loss)		825			(256	)		569
Foreign currency translation adjustment		(3,699	)		—			(3,699	)
Total Other Comprehensive (Loss) Income	$	1,321		$	(1,596	)	$	(275	)

	2020
(In thousands)	Before-Tax Amount			Tax (Expense) Benefit			Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities	$	1,012		$	(263	)	$	749
Reclassification adjustment for amounts related to available-for-sale investments included in net (loss) income		(585	)		152			(433	)
Defined benefit plan adjustments		(1,784	)		553			(1,231	)
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net (loss) income		1,212			(376	)		836
Foreign currency translation adjustment		4,857			—			4,857
Total Other Comprehensive (Loss) Income	$	4,712		$	66		$	4,778

	2019
(In thousands)	Before-Tax Amount			Tax (Expense) Benefit			Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities	$	774		$	(201	)	$	573
Reclassification adjustment for amounts related to available-for-sale investments included in net loss		(397	)		103			(294	)
Defined benefit plan adjustments		(2,488	)		771			(1,717	)
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net income (loss)		771			(239	)		532
Foreign currency translation adjustment		(1,480	)		—			(1,480	)
Total Other Comprehensive (Loss) Income	$	(2,820	)	$	434		$	(2,386	)