Fair Value Measurements - Assets And Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Life settlements	$ 457,810	$ 388,886
Structured settlement receivables	0	384	[1]
Total assets	457,810	389,270
Revolving Credit Facility debt, at estimated fair value		145,831
Total Liabilities	213,631	145,831
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Life settlements	0	0
Structured settlement receivables		0
Total assets	0	0
Revolving Credit Facility debt, at estimated fair value		0
Total Liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Life settlements	0	0
Structured settlement receivables		0
Total assets	0	0
Revolving Credit Facility debt, at estimated fair value		0
Total Liabilities	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Life settlements	457,810	388,886
Structured settlement receivables		384
Total assets	457,810	389,270
Revolving Credit Facility debt, at estimated fair value		145,831
Total Liabilities	213,631	$ 145,831
White Eagle Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	157,946
White Eagle Revolving Credit Facility | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	0
White Eagle Revolving Credit Facility | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	0
White Eagle Revolving Credit Facility | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	157,946
Red Falcon Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	55,685
Red Falcon Revolving Credit Facility | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	0
Red Falcon Revolving Credit Facility | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	0
Red Falcon Revolving Credit Facility | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Revolving Credit Facility debt, at estimated fair value	$ 55,685

[1] Derived from audited consolidated financial statements.