UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net loss	$ (28,519)	$ (9,683)
Adjustments to reconcile net loss to cash used in operating activities:
Stock-based compensation	5,037	4,950
Depreciation	8,402	5,600
Amortization of intangibles	3,973	5,298
Amortization of deferred finance charges	807	742
Other asset impairment	2,317	0
Adjustment to deferred acquisition consideration	2,586	11,460
Acquisition-related contingent consideration payment	(6,665)	(2,542)
Deferred income tax	(10,786)	1,906
Loss on sale of assets	19	21
(Earnings) losses of non-consolidated affiliates	(86)	139
Other non-current assets and liabilities	(1,004)	(5,658)
Foreign exchange	6,864	(1,370)
Changes in working capital:
Accounts receivable	12,358	(39,855)
Expenditures billable to clients	(26,739)	(3,953)
Prepaid expenses and other current assets	(9,734)	(4,270)
Accounts payable, accruals and other liabilities	(76,826)	(10,757)
Advance billings	56,963	14,754
Net cash used in operating activities	(61,033)	(33,218)
Cash flows used in investing activities:
Capital expenditures	(3,799)	(9,413)
Deposits	0	(1,627)
Other investments	(69)	(50)
Net cash used in investing activities	(3,868)	(11,090)
Cash flows (used in) provided by financing activities:
Acquisition related payments	(7,422)	(2,641)
Repayment of long-term debt	(79)	(135)
Purchase of shares	(456)	(51)
Distributions to noncontrolling interests	(3,295)	(2,471)
Payment of dividends	(146)	(22)
Net cash provided by financing activities	47,618	39,631
Effect of exchange rate changes on cash and cash equivalents	306	(58)
Decrease in cash and cash equivalents	(16,977)	(4,735)
Cash and cash equivalents at beginning of period	46,179	27,921
Cash and cash equivalents at end of period	29,202	23,186
Supplemental disclosures:
Cash income taxes paid	1,333	1,293
Cash interest paid	649	999
Change in cash held in trusts	(165)	36
Non-cash transactions:
Capital leases	644	393
Dividends payable	307	716
Convertible preference shares issuance costs payable	0	4,270
Wells Fargo Capital Finance, LLC | Revolving Credit Facility
Cash flows (used in) provided by financing activities:
Repayments of revolving credit agreement	(250,800)	(381,500)
Proceeds from revolving credit agreement	309,816	331,961
Common Stock
Non-cash transactions:
Deferred acquisition consideration settled through issuance of shares	0	5,028
Series 4 Convertible Preferred Stock
Cash flows (used in) provided by financing activities:
Proceeds from issuance of convertible preference shares	0	95,000
Convertible Preferred Stock
Cash flows (used in) provided by financing activities:
Convertible preference shares issuance costs	$ 0	$ (510)