Consolidated Statements of Cash Flows - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net (loss)/income		$ (10,425)	$ 36,633	$ 27,199
Adjustments to reconcile net (loss)/income to net cash provided by operating activities:
Advisory fees received in gold and other precious metals		(49,887)	(32,238)
Impairments		30,710	17,386
Contractual gold payments		13,226	8,512
Stock-based compensation		11,590	13,255	14,717
Loss/(gain) on revaluation of deferred consideration – gold payments	[1]	11,293	(12,220)
Amortization of right of use asset		3,174
Amortization of credit facility issuance costs		2,888	2,087
Paid-in-kind interest income (Note 9)		(2,498)	(1,974)
Depreciation and amortization		1,045	1,301	1,395
Deferred income taxes		(349)	(6,083)	8,838
Settlement gain				(6,909)
Other		(173)	798	921
Changes in operating assets and liabilities:
Securities owned, at fair value		(8,446)	(7,182)	(135)
Accounts receivable		(19)	3,804	(3,532)
Income taxes receivable/payable		4,524	5,706	(11,211)
Prepaid expenses		738	427	(204)
Gold and other precious metals		35,886	25,604
Other assets		172	984	(408)
Acquisition payable				(3,547)
Fund management and administration payable		(476)	221	6,203
Compensation and benefits payable		7,885	(16,050)	13,126
Securities sold, but not yet purchased, at fair value		(1,116)	748	(299)
Operating lease liabilities		(3,587)
Accounts payable and other liabilities		677	(4,251)	2,354
Net cash provided by operating activities		46,832	37,468	48,508
Cash flows from investing activities:
Purchase of fixed assets		(47)	(71)	(295)
Purchase of investments (Note 10)		(8,112)		(8,278)
Funding of notes receivable (Note 9)		(2,090)	(8,000)	(18,748)
Proceeds from held-to-maturity securities maturing or called prior to maturity		3,244	1,107	4,194
Purchase of securities held-to-maturity				(3,009)
Purchase of debt securities available-for-sale				(99,848)
Proceeds from sales and maturities of debt securities available-for-sale			64,498	91,095
Cash paid for acquisition, net of cash acquired (Note 3)			(239,313)
Cash paid – Acquisition of the right to manage Questrade's ETFs (Note 25)				(2,132)
Net cash used in investing activities		(7,005)	(181,779)	(37,021)
Cash flows from financing activities:
Dividends paid		(20,385)	(19,236)	(43,777)
Repayment of debt		(21,000)
Shares repurchased		(2,341)	(2,885)	(7,891)
Credit facility issuance costs		0	(8,690)
Preferred stock issuance costs		0	(181)
Proceeds from the issuance of debt (Note 3)		0	200,000
Proceeds from exercise of stock options		160	191	532
Net cash (used in)/provided by financing activities		(43,566)	169,199	(51,136)
Increase/(decrease) in cash flow due to changes in foreign exchange rate		927	(1,297)	1,120
Net (decrease)/increase in cash and cash equivalents		(2,812)	23,591	(38,529)
Cash and cash equivalents—beginning of year		77,784	54,193	92,722
Cash and cash equivalents—end of year		74,972	77,784	54,193
Supplemental disclosure of cash flow information:
Cash paid for taxes		10,060	14,398	$ 33,113
Cash paid for interest		$ 8,037	$ 5,577

[1] (Losses)/gains arise due to increases/(decreases) in the forward-looking price of gold and the magnitude of any gain or loss is highly correlated to the magnitude of the change in the forward-looking price of gold. See Note 5 for a reconciliation of changes in the deferred consideration balances