Condensed Consolidated Statements of Cash Flows (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities:
Net income (loss)	$ 16,881	$ 5,499
Non-cash items included in net income:
Depreciation and amortization	2,632	1,546
Net investment (gains) losses	149	25
Restricted stock units recognized, net	15,243	20,263
Deferred taxes, net	6,069	3,895
Loss (gain) on fair value of contingent obligation	3,591	(7,513)
Loss (gain) on sales of property and equipment	(777)	0
Changes in operating assets and liabilities:
Advisory fees receivable	(34,655)	18,020
Other receivables and assets	(6,789)	(580)
Compensation payable	14,181	(14,827)
Accounts payable and accrued expenses	(4,292)	(926)
Current income taxes payable	2,540	(13,332)
Net cash provided by operating activities	14,773	12,070
Investing activities:
Distributions from investments	2	60
Purchases of property and equipment	(1,623)	(1,187)
Sales of property and equipment	1,357	0
Net cash used in investing activities	(264)	(1,127)
Financing activities:
Proceeds from revolving bank loan	0	42,430
Repayment of revolving bank loan	0	(37,850)
Repayment of bank term loans	0	(5,625)
Repayment of secured term loan	(8,750)	0
Dividends paid	(3,117)	(30,794)
Purchase of treasury stock	(119,401)	(12,733)
Net cash used in financing activities	(131,268)	(44,572)
Effect of exchange rate changes	(1,601)	3,338
Net decrease in cash and cash equivalents	(118,360)	(30,291)
Cash and cash equivalents, beginning of the period	267,646	98,313
Cash and cash equivalents, end of the period	149,286	68,022
Supplemental disclosure of cash flow information:
Cash paid for interest	11,309	1,827
Cash paid for taxes, net of refunds	$ 2,998	$ 16,225