UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current Assets:
Cash and cash equivalents	$ 26,372	$ 30,873
Accounts receivable, less allowance for doubtful accounts of $2,066 and $1,879	438,648	395,200
Expenditures billable to clients	46,663	42,369
Assets held for sale	11,861	78,913
Other current assets	44,689	42,499
Total Current Assets	568,233	589,854
Fixed assets, at cost, less accumulated depreciation of $133,879 and $128,546	85,456	88,189
Right of use assets - operating leases	246,643	0
Investment in non-consolidated affiliates	6,586	6,556
Goodwill	742,775	740,955
Other intangible assets, net, less accumulated amortization of $164,347 and $161,868	64,858	67,765
Deferred tax assets	92,439	92,741
Other assets	26,129	25,513
Total Assets	1,833,119	1,611,573
Current Liabilities:
Accounts payable	214,694	221,995
Accruals and other liabilities	251,300	313,141
Liabilities held for sale	11,218	35,967
Advance billings	171,151	138,505
Current portion of lease liabilities - operating leases	44,129	0
Current portion of deferred acquisition consideration	36,521	32,928
Total Current Liabilities	729,013	742,536
Long-term debt	919,050	954,107
Long-term portion of deferred acquisition consideration	39,862	50,767
Long-term lease liabilities - operating leases	248,609	0
Other Liabilities	17,523	54,255
Deferred tax liabilities	5,329	5,329
Total Liabilities	1,959,386	1,806,994
Redeemable Noncontrolling Interests	48,006	51,546
Commitments, Contingencies and Guarantees (Note 13)
Shareholders' Deficit:
Convertible preference shares, 145,000 authorized, issued and outstanding at March 31, 2019 and 95,000 at December 31, 2018	152,117	90,123
Common stock and other paid-in capital	98,693	58,579
Accumulated deficit	(465,016)	(464,903)
Accumulated other comprehensive (loss) income	(290)	4,720
MDC Partners Inc. Shareholders' Deficit	(214,496)	(311,481)
Noncontrolling Interests	40,223	64,514
Total Shareholders' Deficit	(174,273)	(246,967)
Total Liabilities, Redeemable Noncontrolling Interests and Shareholders' Deficit	$ 1,833,119	$ 1,611,573