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New Financial Accounting Pronouncements - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2019 | Jan. 01, 2019
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New Accounting Pronouncements And Changes In Accounting Principles [Abstract] |  |
Operating lease, right-of-use asset | $ 13,810 | $ 13,300
Operating lease liability | $ 13,934 | 13,300
Prior sales lease back transaction net of tax |  | $ 4,600

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