Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2017

Investments, Debt and Equity Securities [Abstract]

Unrealized Gain (Loss) on Investments

The amortized cost and estimated fair value of the Company's Marketable Securities as of June 30, 2017 and December 31, 2016 were as follows:

	June 30, 2017								December 31, 2016
	Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value		Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
Securities Investments	$	7,111	$	35	$	4,003	$	3,143	$	6,470	$	—	$	3,945	$	2,525
Debt Securities Carried by EGL	30,858		140		11		30,987		38,392		77		15		38,454
Investment Funds	22,133		3,317		186		25,264		23,665		1,854		11		25,508
Total	$	60,102	$	3,492	$	4,200	$	59,394	$	68,527	$	1,931	$	3,971	$	66,487

Investments Classified by Contractual Maturity Date

Scheduled maturities of the Company's available-for-sale debt securities within the Securities Investments portfolio as of June 30, 2017 and December 31, 2016 were as follows:

	June 30, 2017				December 31, 2016
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	102	$	102	$	—	$	—
Due after one year through five years	1,621		1,623		1,748		1,728
Total	$	1,723	$	1,725	$	1,748	$	1,728