Securities Owned/Sold but Not Yet Purchased (Tables)

9 Months Ended

Sep. 30, 2018

Fair Value Disclosures [Abstract]

Schedule of Securities Owned/Sold But Not Yet Purchased

These securities consist of securities classified as trading and available-for-sale, as follows:

	September 30, 2018		December 31, 2017
Securities Owned
Trading securities	$	4,426	$	1,691
Available-for-sale debt securities		—		64,603
Total	$	4,426	$	66,294
Securities Sold, but not yet Purchased
Trading securities	$	2,018	$	950
Available-for-sale debt securities		—		—
Total	$	2,018	$	950

Schedule of Unrealized Gains, Losses and Fair Value of AFS Debt Securities

The following table summarizes unrealized gains, losses and fair value of the available-for-sale debt securities:

	September 30, 2018		December 31, 2017
Cost	$	—	$	65,237
Gross unrealized gains in other comprehensive income		—		—
Gross unrealized losses in other comprehensive income		—		(634	)
Fair value	$	—	$	64,603