CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and cash equivalents	$ 48,885	$ 102,007
Accounts receivable, less allowance for doubtful accounts of $1,911 and $2,011	386,630	309,796
Expenditures billable to clients	102,053	63,246
Other current assets	31,054	25,458
Total Current Assets	568,622	500,507
Fixed assets, at cost, less accumulated depreciation of $121,917 and $118,119	61,124	52,071
Investment in non-consolidated affiliates	472	275
Goodwill	928,209	744,333
Other intangibles assets, net	65,575	56,262
Deferred tax asset	21,311	21,131
Other assets	62,015	50,648
Total Assets	1,707,328	1,425,227
Current Liabilities:
Accounts payable	268,819	246,694
Accruals and other liabilities	265,923	240,580
Advance billings	207,164	149,540
Current portion of long-term debt	650	467
Current portion of deferred acquisition consideration	82,535	53,041
Total Current Liabilities	825,091	690,322
Long-term debt, less current portion	743,148	664,661
Long-term portion of deferred acquisition consideration	127,381	100,872
Other liabilities	31,956	34,430
Deferred tax liabilities	66,471	63,020
Total Liabilities	1,794,047	1,553,305
Redeemable Noncontrolling Interests (Note 2)	185,925	148,534
Commitments, contingencies and guarantees (Note 11)
Shareholders’ Deficit:
Preferred shares, unlimited authorized, none issued
Shares to be issued, 42,000 shares	0	424
Charges in excess of capital	(188,808)	(126,352)
Accumulated deficit	(462,874)	(465,576)
Stock subscription receivable	(55)	(55)
Accumulated other comprehensive income (loss)	2,341	(797)
MDC Partners Inc. Shareholders' Deficit	(383,548)	(329,700)
Noncontrolling Interests	110,904	53,088
Total Shareholders' Deficit	(272,644)	(276,612)
Total Liabilities, Redeemable Noncontrolling Interests and Shareholders’ Deficit	1,707,328	1,425,227
Common Class A
Shareholders’ Deficit:
Class A Shares, no par value, unlimited authorized, 49,643,813 and 49,092,427 shares issued and outstanding in 2014 and 2013	265,847	262,655
Class B Shares, no par value, unlimited authorized, 3,755 shares issued and outstanding in 2014 and 2013, each convertible into one Class A share	265,847	262,655
Common Class B
Shareholders’ Deficit:
Class A Shares, no par value, unlimited authorized, 49,643,813 and 49,092,427 shares issued and outstanding in 2014 and 2013	1	1
Class B Shares, no par value, unlimited authorized, 3,755 shares issued and outstanding in 2014 and 2013, each convertible into one Class A share	$ 1	$ 1