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Insurance Operations - Beginning and Ending Balances and Changes in DPAC, Net of DRCC (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020
Deferred Policy Acquisition Costs [Roll Forward] |  |  |  |
DPAC, beginning of period | $ 111,193 | $ 94,354 | $ 110,614 | $ 91,882
Capitalized Costs | 61,220 | 57,465 | 115,942 | 105,973
Amortization of DPAC | (56,442) | (48,292) | (110,585) | (94,328)
DPAC, end of period | $ 115,971 | $ 103,527 | $ 115,971 | $ 103,527

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