Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating activities:
Net income (loss)	$ 20,795	$ (19,587)
Adjustments to reconcile net income (loss) to cash provided by operating activities:
Depreciation and amortization	53,458	68,056
Stock-based compensation expense	31,819	30,958
Deferred taxes	(25,530)	(39,175)
Loss from divested operations	2,075	0
Amortization of lease right-of-use assets	20,939	0
Amortization and write-off of deferred financing fees	1,616	1,868
Changes in assets and liabilities:
Fees receivable, net	78,390	56,771
Deferred commissions	4,073	(512)
Prepaid expenses and other current assets	8,891	(53,851)
Other assets	(28,517)	14,421
Deferred revenues	85,740	76,854
Accounts payable, accrued, and other liabilities	(218,153)	(133,079)
Cash provided by operating activities	35,596	2,724
Investing activities:
Additions to property, equipment and leasehold improvements	(20,060)	(17,679)
Other, net	(2,295)	1,000
Cash used in investing activities	(22,355)	(16,679)
Financing activities:
Proceeds from employee stock purchase plan	5,083	4,124
Proceeds from borrowings	35,000	0
Payments on borrowings	(18,682)	(304,813)
Purchases of treasury stock	(44,839)	(28,394)
Cash used in financing activities	(23,438)	(329,083)
Net decrease in cash and cash equivalents and restricted cash	(10,197)	(343,038)
Effects of exchange rates on cash and cash equivalents and restricted cash	804	3,610
Cash and cash equivalents and restricted cash, beginning of period	149,270	227,630
Cash and cash equivalents and restricted cash, end of period	$ 158,663	$ 567,058