CONSOLIDATED STATEMENTS OF CASH FLOWS	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Cash flows from operating activities:
Net loss	$ (28,303,000)	$ (17,167,000)	$ (142,402,000)
Loss from discontinued operations	(6,281,000)	(21,260,000)	(9,200,000)
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	(22,022,000)	4,093,000	(133,202,000)
Share-based Compensation	17,796,000	17,696,000	22,438,000
Adjustments to reconcile income (loss) from continuing operations to cash provided by operating activities:
Depreciation	18,871,000	16,462,000	16,742,000
Amortization of intangibles	33,352,000	30,710,000	19,397,000
Amortization of deferred finance charges and debt discount	2,270,000	2,247,000	7,762,000
Adjustment to deferred acquisition consideration	38,887,000	18,652,000	36,143,000
Deferred income taxes	1,824,000	10,963,000	(5,427,000)
Earnings of non-consolidated affiliates	(1,058,000)	(1,406,000)	(281,000)
Distributions in excess of carrying value	0	0	(3,058,000)
Other and non-current assets and liabilities	4,680,000	(7,805,000)	(9,405,000)
Foreign exchange	30,185,000	14,821,000	3,004,000
Changes in working capital:
Accounts receivable	(4,796,000)	(35,800,000)	16,086,000
Expenditures billable to clients	(3,879,000)	23,351,000	(4,404,000)
Prepaid expenses and other current assets	1,550,000	(1,949,000)	(7,835,000)
Accounts payable, accruals and other current liabilities	76,521,000	51,120,000	30,017,000
Increase (Decrease) in Deferred Revenue	(23,508,000)	(13,805,000)	17,632,000
Cash flows provided by continuing operating activities	164,147,000	129,350,000	55,994,000
Discontinued operations	(1,342,000)	(1,827,000)	3,305,000
Net cash provided by operating activities	162,805,000	127,523,000	59,299,000
Gain (Loss) on Sale of Investments	(6,526,000)	0	0
Cash flows used in investing activities:
Capital expenditures	(23,575,000)	(26,416,000)	(16,809,000)
Payments for (Proceeds from) Investments	8,631,000	85,000	239,000
Acquisitions, net of cash acquired	(24,778,000)	(68,344,000)	(11,872,000)
Distributions from non-consolidated affiliates	0	3,409,000	3,761,000
Other investments	(7,272,000)	(6,312,000)	(2,692,000)
Cash flows used in continuing investing activities	(46,994,000)	(97,578,000)	(27,373,000)
Discontinued operations	17,101,000	(2,108,000)	(2,751,000)
Net cash used in investing activities	(29,893,000)	(99,686,000)	(30,124,000)
Cash flows (used in) provided by financing activities:
Acquisition related payments	(134,056,000)	(78,322,000)	(119,572,000)
Cash overdraft	(1,410,000)	37,835,000	4,976,000
Distributions to noncontrolling interests	(9,503,000)	(6,523,000)	(5,525,000)
Proceeds from exercise of options	224,000	0	0
Payment of dividends	(42,313,000)	(37,698,000)	(22,047,000)
Repayment of long-term debt	(534,000)	(656,000)	(743,000)
Deferred financing costs	0	(3,659,000)	(20,815,000)
Purchase of shares	(2,388,000)	(5,414,000)	(13,817,000)
Other	0	112,000	561,000
Cash flows (used in) provided by continuing financing activities	(189,980,000)	(15,388,000)	11,758,000
Discontinued operations	(40,000)	(40,000)	(1,266,000)
Net cash (used in) provided by financing activities	(190,020,000)	(15,428,000)	10,492,000
Effect of exchange rate changes on cash and cash equivalents	5,218,000	(1,068,000)	2,010,000
(Decrease) increase in cash and cash equivalents	(51,890,000)	11,341,000	41,677,000
Cash and cash equivalents at beginning of year	113,348,000	102,007,000	60,330,000
Cash and cash equivalents at end of year	61,458,000	113,348,000	102,007,000
Supplemental disclosures:
Cash income taxes paid	1,887,000	431,000	919,000
Cash interest paid	52,666,000	49,253,000	38,727,000
Change in cash held in trusts	(1,297,000)	6,419,000	0
Non-cash transactions:
Capital leases	140,000	773,000	595,000
Notes Receivable in exchange for shares of subsidiary	0	1,746,000	0
Dividends Payable	912,000	1,347,000	1,793,000
6.75% Notes
Cash flows (used in) provided by financing activities:
Proceeds from issuance of notes	0	78,937,000	664,125,000
11% Notes
Adjustments to reconcile income (loss) from continuing operations to cash provided by operating activities:
Loss on redemption of Notes	0	0	50,385,000
Cash flows (used in) provided by financing activities:
Repayment of 11% Notes	0	0	(425,000,000)
Premium paid on redemption of Notes	0	0	(50,385,000)
Wells Fargo Capital Finance, Llc [Member] | Revolving Credit Facility [Member]
Cash flows (used in) provided by financing activities:
Repayments of Lines of Credit	(703,020,000)	(378,985,000)	(49,450,000)
Proceeds from Lines of Credit	$ 703,020,000	$ 378,985,000	$ 49,450,000