Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Operating Activities:
Net income (loss)	$ 34,190	$ 8,481
Less: Discontinued operations, net of income taxes	0	(17,453)
Net income from continuing operations	34,190	25,934
Adjustments to reconcile net income from continuing operations to net cash from operating activities:
Stock-based compensation	5,302	7,252
Depreciation and amortization of acquired intangible assets	18,865	19,597
Restructuring (non-cash)	1,402	0
Deferred income taxes	(681)	(8,806)
Amortization of premium on investments, net	10	155
Amortization of debt issuance costs	714	1,027
Accretion of debt discounts	1,840	2,500
(Gain) loss on debt extinguishment	19,581	(2,846)
Revaluation of acquisition-related contingent consideration liability	0	391
Other	0	13
Cash provided (used) by changes in operating assets and liabilities:
Accounts receivable	2,956	1,395
Commissions receivable	581	1,520
Other receivables	2,544	19,460
Prepaid expenses and other current assets	(545)	4,870
Other long-term assets	341	95
Accounts payable	(795)	(1,491)
Commissions and advisory fees payable	(444)	(1,980)
Deferred revenue	(8,493)	(4,257)
Accrued expenses and other current and long-term liabilities	3,768	26,057
Net cash provided by operating activities from continuing operations	81,136	90,886
Investing Activities:
Business acquisition, net of cash acquired	0	(1,788)
Purchases of property and equipment	(1,911)	(1,528)
Proceeds from sales of investments	249	0
Proceeds from maturities of investments	7,252	4,000
Purchases of investments	(409)	(659)
Net cash provided by investing activities from continuing operations	5,181	25
Financing Activities:
Proceeds from credit facilities, net of debt issuance costs and debt discount of $5,913 and $1,875	367,212	0
Payments on convertible notes	(172,827)	(20,667)
Payments on credit facilities	(275,000)	(60,000)
Proceeds from stock option exercises	23,996	1,142
Proceeds from issuance of stock through employee stock purchase plan	662	562
Tax payments from shares withheld for equity awards	(5,267)	(901)
Contingent consideration payments for business acquisition	(946)	0
Net cash used by financing activities from continuing operations	(62,170)	(79,864)
Net cash provided by continuing operations	24,147	11,047
Net cash provided by operating activities from discontinued operations	0	14,198
Net cash provided (used) by investing activities from discontinued operations	1,028	(970)
Net cash used by financing activities from discontinued operations	0	(7,000)
Net cash provided by discontinued operations	1,028	6,228
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	43	(7)
Net increase in cash, cash equivalents, and restricted cash	25,218	17,268
Cash, cash equivalents, and restricted cash, beginning of period	54,868	59,830
Cash, cash equivalents, and restricted cash, end of period	80,086	77,098
Cash paid for income taxes from continuing operations	719	1,198
Cash paid for interest from continuing operations	$ 9,478	$ 17,616