Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Revenues:
Total revenues	$ 65,485	$ 58,904
Operating Expenses:
Compensation and benefits	21,301	18,832
Fund management and administration	15,166	10,912
Marketing and advertising	2,680	3,195
Sales and business development	4,422	3,813
Contractual gold payments (Note 11)	3,098
Professional and consulting fees	1,482	1,636
Occupancy, communications and equipment	1,618	1,363
Depreciation and amortization	269	355
Third-party distribution fees	2,400	1,725
Acquisition-related costs (Note 3)	313	2,062
Other	2,053	1,790
Total expenses	54,802	45,683
Operating income	10,683	13,221
Other Income/(Expenses):
Interest expense	(2,892)
Gain on revaluation of deferred consideration – gold payments (Note 11)	4,404
Interest income	779	962
Impairment (Note 14)	(572)
Other losses, net	(4,627)	(261)
Income before taxes	7,775	13,922
Income tax (benefit)/expense	(1,049)	4,498
Net income	$ 8,824	$ 9,424
Earnings per share—basic	$ 0.05	$ 0.07
Earnings per share—diluted	$ 0.05	$ 0.07
Weighted-average common shares—basic	151,625	135,329
Weighted-average common shares—diluted	166,811	136,468
Cash dividends declared per common share	$ 0.03	$ 0.03
Advisory Fees [Member]
Operating Revenues:
Total revenues	$ 64,840	$ 58,456
Other Income [Member]
Operating Revenues:
Total revenues	$ 645	$ 448