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Revenue Recognition - Summary of Impact of Adopting Topic 606 on Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Revenue from Contract with Customers [Line Items] |  |
Inventories | $ 61,162 | $ 48,346
Other current assets | 35,760 | 33,308
Total assets | 834,658 | 738,746
Deferred income taxes | 6,695 | 6,444
Retained earnings | 105,212 | 48,434
Total liabilities and stockholders' equity | 834,658 | $ 738,746
Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] |  |
Revenue from Contract with Customers [Line Items] |  |
Inventories | 5,801 |
Other current assets | (8,607) |
Total assets | (2,806) |
Deferred income taxes | (534) |
Retained earnings | (2,272) |
Total liabilities and stockholders' equity | (2,806) |
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Accounting Standards Update 2014-09 [Member] |  |
Revenue from Contract with Customers [Line Items] |  |
Inventories | 66,963 |
Other current assets | 27,153 |
Total assets | 831,852 |
Deferred income taxes | 6,161 |
Retained earnings | 102,940 |
Total liabilities and stockholders' equity | $ 831,852 |

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