Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net income	$ 1,115	$ 155
Adjustments to reconcile net income to net cash provided by/(used in) operating activities:
Depreciation and amortization	71	65
Stock-based compensation	2,115	2,119
Deferred rent	(37)	(38)
Accretion to interest income and other	20	24
Net change in operating assets and liabilities:
Accounts receivable	(1,504)	(365)
Other assets	198	(170)
Fund management and administration payable	1,913	722
Compensation and benefits payable	(2,931)	(2,542)
Accounts payable and other liabilities	1,720	553
Net cash provided by operating activities	2,680	523
Cash flows from investing activities:
Purchase of fixed assets	(56)	(6)
Purchase of investments	(3,549)	(2,494)
Proceeds from the redemption of investments	2,486	2,147
Net cash used in investing activities	(1,119)	(353)
Cash flows from financing activities:
Net proceeds from sale of common stock	4,329
Shares repurchased	(995)	(1,599)
Proceeds from exercise of stock options	1,613
Net cash provided/(used in) by financing activities	4,947	(1,599)
Net increase/(decrease) in cash and cash equivalents	6,508	(1,429)
Cash and cash equivalents-beginning of year	25,630	14,233
Cash and cash equivalents-end of year	32,138	12,804
Supplemental disclosure of cash flow information:
Cash paid for income taxes	3	7
Noncash investing and financing activities:
Cash less exercise of stock options		$ 84