Life Settlements (Life Insurance Policies) (Detail) $ in Thousands	Sep. 30, 2015 USD ($) Contract	Dec. 31, 2014 USD ($) Contract
Number of Life Settlement Contracts
0-1 | Contract	0	0
1-2 | Contract	9	4
2-3 | Contract	20	10
3-4 | Contract	19	16
4-5 | Contract	25	19
Thereafter | Contract	561	558
Total | Contract	634	607
Estimated Fair Value
0-1	$ 0	$ 0
1-2	21,516	9,227
2-3	52,926	23,202
3-4	29,638	29,531
4-5	33,129	23,012
Thereafter	320,601	303,914
Total	457,810	388,886
Face Value
0-1	0	0
1-2	32,307	12,728
2-3	95,122	45,852
3-4	70,309	67,735
4-5	96,406	65,614
Thereafter	2,703,759	2,739,137
Total	$ 2,997,903	$ 2,931,066