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v3.19.1

Changes in Accumulated Other Comprehensive Income (Loss) By Component (Detail) - USD ($) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Dec. 31, 2018 | Jan. 01, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | $ 956,816 | $ 920,964 |  |
Other comprehensive income (loss) before reclassifications | 8,050 | (24,587) |  |
Amounts reclassified from accumulated other comprehensive income (loss) to net income | (306) | 97 |  |
Net current-period other comprehensive income (loss) | 7,744 | (24,490) |  |
Ending balance | 978,373 | 919,088 |  |
Reclassification adjustment for (gains) losses included in net income | 413 | (131) |  |
Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (21,741) | (249) |  |
Balance after reclassification adjustments |  |  |  | $ (1,458)
Other comprehensive income (loss) before reclassifications | 13,185 | (25,233) |  |
Amounts reclassified from accumulated other comprehensive income (loss) to net income | 0 | 0 |  |
Net current-period other comprehensive income (loss) | 13,185 | (25,233) |  |
Ending balance | (8,556) | (26,691) |  |
Foreign Currency Items |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 0 | 88 |  |
Balance after reclassification adjustments |  |  |  | 0
Other comprehensive income (loss) before reclassifications | 0 | 0 |  |
Amounts reclassified from accumulated other comprehensive income (loss) to net income | 0 | 0 |  |
Net current-period other comprehensive income (loss) | 0 | 0 |  |
Ending balance | 0 | 0 |  |
Total Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (21,741) | (161) |  |
Balance after reclassification adjustments |  |  |  | (1,458)
Other comprehensive income (loss) before reclassifications | 13,185 | (25,233) |  |
Amounts reclassified from accumulated other comprehensive income (loss) to net income | 0 | 0 |  |
Net current-period other comprehensive income (loss) | 13,185 | (25,233) |  |
Ending balance | (8,556) | (26,691) |  |
Unrealized Gains (Losses) on Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (922) | (198) |  |
Balance after reclassification adjustments |  |  |  | (240)
Other comprehensive income (loss) before reclassifications | (5,135) | 646 |  |
Amounts reclassified from accumulated other comprehensive income (loss) to net income | (306) | 97 |  |
Net current-period other comprehensive income (loss) | (5,441) | 743 |  |
Ending balance | (6,363) | 503 |  |
Accumulated Other Comprehensive Loss |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | (22,663) | (359) |  |
Balance after reclassification adjustments |  |  |  | (1,698)
Ending balance | (14,919) | (26,188) |  |
Retained Earnings |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Beginning balance | 316,651 | 258,076 |  |
Ending balance | 328,476 | 279,942 |  |
Accounting Standards Update 2018-02 |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | $ 0 |
Accounting Standards Update 2018-02 | Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (256)
Accounting Standards Update 2018-02 | Foreign Currency Items |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | 0
Accounting Standards Update 2018-02 | Total Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (256)
Accounting Standards Update 2018-02 | Unrealized Gains (Losses) on Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (42)
Accounting Standards Update 2018-02 | Accumulated Other Comprehensive Loss |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | (298) | (298)
Accounting Standards Update 2018-02 | Retained Earnings |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | 298 |
Accounting Standards Update 2016-01 |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | 0 |
Accounting Standards Update 2016-01 | Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (953)
Accounting Standards Update 2016-01 | Foreign Currency Items |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (88)
Accounting Standards Update 2016-01 | Total Unrealized Gains (Losses) |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (1,041)
Accounting Standards Update 2016-01 | Unrealized Gains (Losses) on Cash Flow Hedges |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | 0
Accounting Standards Update 2016-01 | Accumulated Other Comprehensive Loss |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | (1,041) | (1,041)
Accounting Standards Update 2016-01 | Retained Earnings |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  | $ 1,041 |
Combined effect of multiple accounting pronouncements on components of shareholders' equity | Accumulated Other Comprehensive Loss |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | (1,300)
Combined effect of multiple accounting pronouncements on components of shareholders' equity | Retained Earnings |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Cumulative effect of new accounting principle in period of adoption |  |  |  | $ 1,300
Interest Expense |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward] |  |  |  |
Reclassification adjustment for (gains) losses included in net income | (413) | 131 |  |
Reclassification adjustment for (gains) losses in net income, after tax | $ (306) | $ 97 |  |

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