Investments (Tables)

3 Months Ended

Mar. 31, 2015

Investments, Debt and Equity Securities [Abstract]

Summary of Investments

Investments consist of the following at March 31, 2015 and December 31, 2014 (amounts in thousands):

	March 31, 2015		December 31, 2014
Trading
Short-term investments	$	13,160	$	37,405
Available-for-sale
Securitized assets	5,938		3,721
Held-to-maturity
Securitized assets	53,716		31,017
Other investments
Private equity funds	18,656		17,560
	$	91,470	$	89,703

Available-for-sale Securities

The amortized cost and estimated fair value of available-for sale and held-to-maturity investments at March 31, 2015 and December 31, 2014 were as follows (amounts in thousands):

	March 31, 2015
	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Aggregate Fair Value
Available-for-sale
Securitized assets	$	5,938	—	—	$	5,938
Held-to-maturity
Securitized assets	53,716		—	—	53,716
	December 31, 2014
	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Aggregate Fair Value
Available-for-sale
Securitized assets	$	3,721	—	—	$	3,721
Held-to-maturity
Securitized assets	31,017		—	—	31,017

Held-to-maturity Securities

The amortized cost and estimated fair value of available-for sale and held-to-maturity investments at March 31, 2015 and December 31, 2014 were as follows (amounts in thousands):

	March 31, 2015
	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Aggregate Fair Value
Available-for-sale
Securitized assets	$	5,938	—	—	$	5,938
Held-to-maturity
Securitized assets	53,716		—	—	53,716
	December 31, 2014
	Amortized Cost		Gross Unrealized Gains	Gross Unrealized Losses	Aggregate Fair Value
Available-for-sale
Securitized assets	$	3,721	—	—	$	3,721
Held-to-maturity
Securitized assets	31,017		—	—	31,017