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Insurance Operations - Beginning and Ending Balances and Changes in DPAC (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Deferred Policy Acquisition Costs [Roll Forward]
DPAC, beginning of period	$ 94,354	$ 83,284	$ 91,882	$ 84,686
Capitalized Costs	57,465	50,694	105,973	92,215
Amortization of DPAC	(48,292)	(43,448)	(94,328)	(86,371)
DPAC, end of period	$ 103,527	$ 90,530	$ 103,527	$ 90,530

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- Definition

Amount of amortization expense (reversal of expense) for deferred policy acquisition costs.

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