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Nature of Business and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
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, 2018, 2017 and 2016 is as follows:
Year Ended December 31, |  | 2018 |  |  | 2017 |  |  | 2016 |
(In thousands) |  |  |  |  |  |  |  |  |  |  |  |
Balance at beginning of period |  | $ | 9,724 |  |  | $ | 8,548 |  |  | $ | 8,739 |
Plus: Amounts charged to cost and expenses |  |  | 7,392 |  |  |  | 6,951 |  |  |  | 8,561 |
Less: Deductions |  |  | (8,493 | ) |  |  | (5,775 | ) |  |  | (8,752 | )
Balance at end of period |  | $ | 8,623 |  |  | $ | 9,724 |  |  | $ | 8,548 |
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, 2018, 2017 and 2016:
(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 at 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 at 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 | )
Other comprehensive income (loss) before reclassifications |  |  | 685 |  |  |  | — |  |  |  | (3,890 | ) |  |  | (4,236 | ) |  |  | (7,441 | )
Amounts reclassified to retained earnings (1) |  |  | (3,220 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (3,220 | )
Amounts reclassified from accumulated other comprehensive income |  |  | (595 | ) |  |  | — |  |  |  | 135 |  |  |  | — |  |  |  | (460 | )
Balance at December 31, 2018 |  | $ | (563 | ) |  | $ | — |  |  | $ | (8,041 | ) |  | $ | (5,812 | ) |  | $ | (14,416 | )
(1) | With the adoption of ASU 2016-01, the unrealized gains on our equity investments were reclassified to retained earnings. See Recently Issued Accounting Standards later in Note 1 for more information.
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, 2018, 2017 and 2016:
(In thousands) |  | 2018
Details about Accumulated Other Comprehensive Loss Components |  | Amount Reclassified from Accumulated Other Comprehensive Income |  |  | Affected Line Item in the Statement Where Net Income Is Presented
Unrealized gains on available-for-sale securities: |  |  |  |  |  |
Net realized gain on sales of securities |  | $ | 804 |  |  | Net investment gain (loss)
Defined benefit plan adjustments – actuarial losses |  |  | (196 | ) |  | (1)
Total reclassifications for the period, before tax |  |  | 608 |  |  |
Tax expense |  |  | (148 | ) |  |
Total reclassifications for the period, net of tax |  | $ | 460 |  |  |
(1) | Included in the computation of net periodic pension cost. See Note 13 of Notes to Consolidated Financial Statements.
(In thousands) |  | 2017
Details about Accumulated Other Comprehensive Loss 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 investment gain (loss)
Impairment expense |  |  | (180 | ) |  | Net investment gain (loss)
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 |  |  | (1,423 | ) |  |
Total reclassifications for the period, net of tax |  | $ | 1,958 |  |  |
| (0) | Included in the computation of net periodic pension cost. See Note 13 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 investment gain (loss)
Impairment expense |  |  | (419 | ) |  | Net investment gain (loss)
Defined benefit plan adjustments – actuarial losses |  |  | (156 | ) |  | (1)
Total reclassifications for the period, before tax |  |  | 4,833 |  |  |
Tax expense |  |  | (1,897 | ) |  |
Total reclassifications for the period, net of tax |  | $ | 2,936 |  |  |
| (0) | Included in the computation of net periodic pension cost. See Note 13 of Notes to Consolidated Financial Statements.
Tax Effects Related to the Change in Each Component of Other Comprehensive Income (Loss) | The following tables present the tax effects related to the change in each component of other comprehensive income (loss) for the years ended December 31, 2018, 2017 and 2016:
|  | 2018 |
(In thousands) |  | Before-Tax Amount |  |  | Tax (Expense) Benefit |  |  | Net-of-Tax Amount |
Unrealized gains (losses) on available-for-sale securities |  | $ | 926 |  |  | $ | (241 | ) |  | $ | 685 |
Reclassification adjustment for amounts related to available-for-sale investments included in net loss |  |  | (804 | ) |  |  | 209 |  |  |  | (595 | )
Reclassification adjustment for amounts reclassed to retained earnings related to the adoption of ASU 2016-01 |  |  | (4,351 | ) |  |  | 1,131 |  |  |  | (3,220 | )
Defined benefit plan adjustments |  |  | (5,638 | ) |  |  | 1,748 |  |  |  | (3,890 | )
Reclassification adjustment for amounts related to defined benefit plan adjustments included in net loss |  |  | 196 |  |  |  | (61 | ) |  |  | 135 |
Foreign currency translation adjustment |  |  | (4,236 | ) |  |  | — |  |  |  | (4,236 | )
Total Other Comprehensive Income (Loss) |  | $ | (13,907 | ) |  | $ | 2,786 |  |  | $ | (11,121 | )
|  | 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 | )
Cash Dividends | The following table shows dividends paid to our shareholders in each quarter of 2018, 2017 and 2016.
Dividends per Common Share |
|  | 2018 |  |  | 2017 |  |  | 2016 |
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 |
Schedule of Cumulative Effect of Changes made to Consolidated Balance Sheet | The cumulative effect of the changes made to our Consolidated Balance Sheet on January 1, 2018 for the adoption of ASU 2014-09 and the related ASUs was as follows:
(In thousands) |  | Balance at December 31, 2017 |  |  | Adjustments due to ASU 2014-09 |  |  | Balance at January 1, 2018 |  |
Other receivables |  | $ | 26,578 |  |  | $ | 374 |  |  | $ | 26,952 |
Deferred tax assets, net |  | $ | 23,428 |  |  | $ | (96 | ) |  | $ | 23,332 |
Retained earnings |  | $ | 922,178 |  |  | $ | 278 |  |  | $ | 922,456 |
Summary of Effect of Adoption of ASU 2014-09 and Related ASUs | The effect of the adoption of ASU 2014-09 and the related ASUs on our financial statements was as follows:
|  | As of December 31, 2018 |
(In thousands) |  | As Reported |  |  | Balances Without Adoption of ASC 606 |  |  | Effect of Adoption of ASC 606 |
Sales |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 458,232 |  |  | $ | 458,182 |  |  | $ | 50 |
Services |  | $ | 71,045 |  |  | $ | 67,329 |  |  | $ | 3,716 |
Cost of Sales |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 278,929 |  |  | $ | 278,904 |  |  | $ | 25 |
Services |  | $ | 46,783 |  |  | $ | 44,788 |  |  | $ | 1,995 |
Loss before benefit for income taxes |  | $ | (33,371 | ) |  | $ | (35,117 | ) |  | $ | 1,746 |
Benefit for income taxes |  | $ | 14,029 |  |  | $ | 14,763 |  |  | $ | (734 | )
Net loss |  | $ | (19,342 | ) |  | $ | (20,354 | ) |  | $ | 1,012 |
|  | As of December 31, 2018 |
(In thousands) |  | As Reported |  |  | Balances Without Adoption of ASC 606 |  |  | Effect of Adoption of ASC 606 |
Assets |  |  |  |  |  |  |  |  |  |  |  |
Other receivables |  | $ | 36,699 |  |  | $ | 32,933 |  |  | $ | 3,766 |
Prepaid expenses and other current assets |  | $ | 10,744 |  |  | $ | 12,739 |  |  | $ | (1,995 | )
Inventory |  | $ | 99,848 |  |  | $ | 99,873 |  |  | $ | (25 | )
Liabilities |  |  |  |  |  |  |  |  |  |  |  |
Income tax payable |  | $ | 12,518 |  |  | $ | 13,252 |  |  | $ | (734 | )
Equity |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  | $ | 883,975 |  |  | $ | 882,963 |  |  | $ | 1,012 |

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