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CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) (USD $) In Thousands, except Share data | Common Class A [Member] | Common Class B [Member] | Share Capital to be Issued [Member] | Additional Paid-in Capital [Member] | Charges in Excess of Capital [Member] | Accumulated Deficit [Member] | Stock Subscription Receivable [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Parent [Member] | Noncontrolling Interest [Member] | Total
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2012 | $ 253,869 | $ 1 | $ 424 | $ 0 | $ (72,913) | $ (316,713) | $ (55) | $ (7,445) | $ (142,832) | $ 58,022 | $ (84,810)
Balance (in shares) at Dec. 31, 2012 | 31,074,168 | 2,503 |  |  |  |  |  |  |  |  |
Balance (in shares) at Dec. 31, 2012 |  |  | 28,000 |  |  |  |  |  |  |  |
Net loss attributable to MDC Partners | 0 | 0 | 0 | 0 | 0 | (43,158) | 0 | 0 | (43,158) | 0 | (43,158)
Other Comprehensive income (loss) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (1,029) | (1,029) | (11) | (1,040)
Stock Appreciation Rights Exercised | 172 | 0 | 0 | (172) | 0 | 0 | 0 | 0 | 0 | 0 | 0
Stock Appreciation Rights Exercised (in shares) | 58,668 | 0 | 0 |  |  |  |  |  |  |  |
Issuance of restricted stock | 4,830 | 0 | 0 | (4,830) | 0 | 0 | 0 | 0 | 0 | 0 | 0
Issuance of restricted stock (in shares) | 339,114 | 0 | 0 |  |  |  |  |  |  |  |
Shares acquired and cancelled | (3,380) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | (3,380) | 0 | (3,380)
Shares acquired and cancelled (in shares) | (139,677) | 0 | 0 |  |  |  |  |  |  |  |
Stock-based compensation | 0 | 0 | 0 | 3,412 | 0 | 0 | 0 | 0 | 3,412 | 0 | 3,412
Changes in redemption value of redeemable noncontrolling interests | 0 | 0 | 0 | (1,542) | 0 | 0 | 0 | 0 | (1,542) | 0 | (1,542)
Decrease in noncontrolling interests from business combinations | 0 | 0 | 0 | (1,059) | 0 | 0 | 0 | 0 | (1,059) | 0 | (1,059)
Transfer to charges in excess of capital | 0 | 0 | 0 | 4,191 | (4,191) | 0 | 0 | 0 | 0 | 0 | 0
Balance at Mar. 31, 2013 | $ 255,491 | $ 1 | $ 424 | $ 0 | $ (77,104) | $ (359,871) | $ (55) | $ (8,474) | $ (189,588) | $ 58,011 | $ (131,577)
Balance (in shares) at Mar. 31, 2013 | 31,332,273 | 2,503 |  |  |  |  |  |  |  |  |
Balance (in shares) at Mar. 31, 2013 |  |  | 28,000 |  |  |  |  |  |  |  |

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