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Insurance Operations - Beginning and Ending Balances and Changes in DPAC (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Insurance [Abstract]
DPAC, beginning of period	$ 73,591	$ 67,190	$ 64,912	$ 60,019
Capitalized Costs	36,999	33,227	110,653	100,444
Amortization of DPAC	(34,656)	(32,117)	(99,631)	(92,163)
DPAC, end of period	$ 75,934	$ 68,300	$ 75,934	$ 68,300

X

- Definition

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

+ References

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- Definition

Net amount of deferred policy acquisition costs capitalized on contracts remaining in force as of the balance sheet date.

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Total amount of policy acquisition costs capitalized during the income statement period.

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