UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 29,202	$ 46,179
Cash held in trusts	4,467	4,632
Accounts receivable, less allowance for doubtful accounts of $2,524 and $2,453	424,918	434,072
Expenditures billable to clients	57,885	31,146
Other current assets	36,273	26,742
Total Current Assets	552,745	542,771
Fixed assets, at cost, less accumulated depreciation of $120,119 and $123,599	85,370	90,306
Investments in non-consolidated affiliates	6,442	6,307
Goodwill	832,510	835,935
Other intangible assets, net	66,353	70,605
Deferred tax assets	126,252	115,325
Other assets	31,405	37,643
Total Assets	1,701,077	1,698,892
Current Liabilities:
Accounts payable	202,724	244,527
Trust liability	4,467	4,632
Accruals and other liabilities	290,003	327,812
Advance billings	210,245	148,133
Current portion of long-term debt	322	313
Current portion of deferred acquisition consideration	40,909	50,213
Total Current Liabilities	748,670	775,630
Long-term debt, less current portion	942,806	882,806
Long-term portion of deferred acquisition consideration	82,822	72,213
Other liabilities	55,197	54,110
Deferred tax liabilities	6,899	6,760
Total Liabilities	1,836,394	1,791,519
Redeemable Noncontrolling Interests (Note 2)	54,345	62,886
Commitments, Contingencies, and Guarantees (Note 13)
Shareholders’ Deficit:
Charges in excess of capital	(314,662)	(314,241)
Accumulated deficit	(370,586)	(340,000)
Total Shareholders' Deficit	(189,662)	(155,513)
Total Liabilities, Redeemable Noncontrolling Interests and Shareholders' Deficit	1,701,077	1,698,892
Common Class A
Shareholders’ Deficit:
Common shares	353,074	352,432
Preferred Stock | Series 4 Convertible Preferred Stock
Shareholders’ Deficit:
Convertible preference shares (liquidation preference $103,379)	90,123	90,220
Total Shareholders' Deficit	90,123	90,220
Accumulated other comprehensive gain (loss)
Shareholders’ Deficit:
Accumulated other comprehensive gain (loss)	1,425	(1,954)
Total Shareholders' Deficit	1,425	(1,954)
MDC Partners Inc. Shareholders' Deficit
Shareholders’ Deficit:
MDC Partners Inc. Shareholders' Deficit	(240,626)	(213,543)
Total Shareholders' Deficit	(240,626)	(213,543)
Noncontrolling Interest
Shareholders’ Deficit:
Noncontrolling interests	50,964	58,030
Total Shareholders' Deficit	$ 50,964	$ 58,030