Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating activities:
Net income (loss)	$ 6,368	$ (746)
Non-cash items included in net income (loss):
Depreciation and amortization	1,339	786
Net investment (gains) losses	(1)	23
Restricted stock units recognized, net	8,463	11,251
Deferred taxes, net	6,529	7,441
Loss (gain) on fair value of contingent obligation	910	(6,005)
Changes in operating assets and liabilities:
Advisory fees receivable	(38,336)	583
Other receivables and assets	(15,823)	(3,064)
Compensation payable	1,850	(22,299)
Accounts payable and accrued expenses	2,825	(314)
Current income taxes payable	6,226	(16,194)
Net cash used in operating activities	(19,650)	(28,538)
Investing activities:
Distributions from investments	0	25
Purchases of property and equipment	(672)	(448)
Net cash used in investing activities	(672)	(423)
Financing activities:
Proceeds from revolving bank loan	0	21,680
Repayment of revolving bank loan	0	(11,750)
Repayment of secured term loan	(4,375)	0
Dividends paid	(1,687)	(15,453)
Purchase of treasury stock	(34,753)	(12,516)
Net cash used in financing activities	(40,815)	(18,039)
Effect of exchange rate changes	1,631	680
Net decrease in cash and cash equivalents	(59,506)	(46,320)
Cash and cash equivalents, beginning of period	267,646	98,313
Cash and cash equivalents, end of period	208,140	51,993
Supplemental disclosure of cash flow information:
Cash paid for interest	5,684	1,072
Cash paid for taxes, net of refunds	$ 2,042	$ 14,655