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Nature of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2017

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Warranty Expense and Write-Off Activity

A summary of warranty expense and write-off activity for the years ended December 31, 2017, 2016 and 2015 is as follows:

Year Ended December 31,		2017				2016				2015
(In thousands)
Balance at beginning of period		$	8,548			$	8,739			$	8,415
Plus: Amounts charged to cost and expenses			6,951				8,561				2,998
Less: Deductions			(5,775	)			(8,752	)			(2,674	)
Balance at end of period		$	9,724			$	8,548			$	8,739

Changes in Accumulated Other Comprehensive Income, Net of Tax by Component

The following table presents changes in accumulated other comprehensive income, net of tax, by component for the years ended December 31, 2015, 2016 and 2017:

(In thousands)		Unrealized Gains (Losses) on Available- for-Sale Securities				Unrealized Gains (Losses) on Cash Flow Hedges				Defined Benefit Plan Adjustments				Foreign Currency Adjustments				Total
Balance, December 31, 2014		$	8,964			$	—			$	(5,757	)		$	(3,282	)		$	(75	)
Other comprehensive income (loss) before    reclassifications			(844	)			—				1,589				(3,724	)			(2,979	)
Amounts reclassified from accumulated other    comprehensive income			(6,188	)			—				273				—				(5,915	)
Balance, December 31, 2015			1,932				—				(3,895	)			(7,006	)			(8,969	)
Other comprehensive income (loss) before    reclassifications			1,515				—				(1,229	)			(569	)			(283	)
Amounts reclassified from accumulated other    comprehensive income			(3,043	)			—				107				—				(2,936	)
Balance, December 31, 2016			404				—				(5,017	)			(7,575	)			(12,188	)
Other comprehensive income (loss) before    reclassifications			5,020				(619	)			451				5,999				10,851
Amounts reclassified from accumulated other    comprehensive income			(2,857	)			619				280				—				(1,958	)
Balance at December 31, 2017		$	2,567			$	—			$	(4,286	)		$	(1,576	)		$	(3,295	)

Reclassifications Out of Accumulated Other Comprehensive Income

The following tables present the details of reclassifications out of accumulated other comprehensive income for the years ended December 31, 2017, 2016 and 2015:

(In thousands)		2017
Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income				Affected Line Item in the Statement Where Net Income Is Presented
Unrealized gains (losses) on available-for-sale securities:
Net realized gain on sales of securities		$	4,864			Net realized investment gain
Impairment expense			(180	)		Net realized investment gain
Net losses on derivatives designated as hedging instruments			(897	)		Cost of sales
Defined benefit plan adjustments – actuarial losses			(406	)		(1)
Total reclassifications for the period, before tax			3,381
Tax (expense) benefit			(1,423	)
Total reclassifications for the period, net of tax		$	1,958

(1) Included in the computation of net periodic pension cost. See Note 12 of Notes to Consolidated Financial Statements.

(In thousands)		2016
Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income				Affected Line Item in the Statement Where Net Income Is Presented
Unrealized gains (losses) on available-for-sale securities:
Net realized gain on sales of securities		$	5,408			Net realized investment gain
Impairment expense			(419	)		Net realized investment gain
Defined benefit plan adjustments – actuarial losses			(156	)		(1)
Total reclassifications for the period, before tax			4,833
Tax (expense) benefit			(1,897	)
Total reclassifications for the period, net of tax		$	2,936

⁽¹⁾ Included in the computation of net periodic pension cost. See Note 12 of Notes to Consolidated Financial Statements.

(In thousands)		2015
Details about Accumulated Other Comprehensive Income Components		Amount Reclassified from Accumulated Other Comprehensive Income				Affected Line Item in the Statement Where Net Income Is Presented
Unrealized gains (losses) on available-for-sale securities:
Net realized gain on sales of securities		$	10,348			Net realized investment gain
Impairment expense			(203	)		Net realized investment gain
Defined benefit plan adjustments – actuarial losses			(396	)		(1)
Total reclassifications for the period, before tax			9,749
Tax (expense) benefit			(3,834	)
Total reclassifications for the period, net of tax		$	5,915

⁽¹⁾ Included in the computation of net periodic pension cost. See Note 12 of Notes to Consolidated Financial Statements.

Other Comprehensive Income

The following tables present the tax effects related to the change in each component of other comprehensive income for the years ended December 31, 2017, 2016 and 2015:

		2017
(In thousands)		Before-Tax Amount				Tax (Expense) Benefit				Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities		$	8,230			$	(3,210	)		$	5,020
Reclassification adjustment for amounts related to available-for-sale investments included in net income			(4,684	)			1,827				(2,857	)
Unrealized gains (losses) on cash flow hedges			(897	)			278				(619	)
Reclassification adjustment for amounts related to cash flow hedges included in net income			897				(278	)			619
Defined benefit plan adjustments			654				(203	)			451
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net income			406				(126	)			280
Foreign currency translation adjustment			5,999				—				5,999
Total Other Comprehensive Income (Loss)		$	10,605			$	(1,712	)		$	8,893

		2016
(In thousands)		Before-Tax Amount				Tax (Expense) Benefit				Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities		$	2,484			$	(969	)		$	1,515
Reclassification adjustment for amounts related to available-for-sale investments included in net income			(4,989	)			1,946				(3,043	)
Defined benefit plan adjustments			(1,782	)			553				(1,229	)
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net income			156				(49	)			107
Foreign currency translation adjustment			(569	)			—				(569	)
Total Other Comprehensive Income (Loss)		$	(4,700	)		$	1,481			$	(3,219	)

		2015
(In thousands)		Before-Tax Amount				Tax (Expense) Benefit				Net-of-Tax Amount
Unrealized gains (losses) on available-for-sale securities		$	(1,384	)		$	540			$	(844	)
Reclassification adjustment for amounts related to available-for-sale investments included in net income			(10,145	)			3,957				(6,188	)
Defined benefit plan adjustments			2,303				(714	)			1,589
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net income			396				(123	)			273
Foreign currency translation adjustment			(3,724	)			—				(3,724	)
Total Other Comprehensive Income (Loss)		$	(12,554	)		$	3,660			$	(8,894	)

Cash Dividends

The following table shows dividends paid to our shareholders in each quarter of 2017, 2016 and 2015.

Dividends per Common Share
		2017				2016				2015
First Quarter		$	0.09			$	0.09			$	0.09
Second Quarter		$	0.09			$	0.09			$	0.09
Third Quarter		$	0.09			$	0.09			$	0.09
Fourth Quarter		$	0.09			$	0.09			$	0.09

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Tabular disclosure of the changes in the guarantor's aggregate product warranty liability, including the beginning balance of the aggregate product warranty liability, the aggregate reductions in that liability for payments made (in cash or in kind) under the warranty, the aggregate changes in the liability for accruals related to product warranties issued during the reporting period, the aggregate changes in the liability for accruals related to preexisting warranties (including adjustments related to changes in estimates), and the ending balance of the aggregate product warranty liability.

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