Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 356,239	$ 376,727
Accounts receivable, net of allowances of $41.6 million and $28.6 million at September 30, 2014 and December 31, 2013, respectively	119,206	101,587
Inventory	75,174	87,105
Deferred tax assets	18,666	13,431
Prepaid expenses and other current assets	15,628	12,591
Total current assets	584,913	591,441
Fixed assets, net	40,685	39,268
Intangible assets, net	908,075	836,273
Goodwill	285,309	257,694
Restricted cash	1,466	1,574
Other assets	8,936	15,032
Total assets	1,829,384	1,741,282
Current liabilities:
Accounts payable	8,371	26,911
Accrued expenses	134,468	142,290
Deferred revenue	3,855	5,052
Total current liabilities	146,694	174,253
Contingent purchase price	368,994	302,363
Deferred tax liabilities	153,107	128,677
Convertible senior notes (due 2017)	243,976	236,088
Other liabilities	6,041	7,740
Total liabilities	918,812	849,121
Stockholders' equity:
Preferred stock, $1.00 par value per share, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.001 par value per share, 125,000,000 shares authorized; 67,539,648 issued and 65,346,666 outstanding at September 30, 2014 and 66,590,875 issued and 64,397,893 outstanding at December 31, 2013, respectively	68	66
Additional paid-in capital	1,032,107	991,982
Treasury stock, at cost; 2,192,982 shares at September 30, 2014 and December 31, 2013, respectively	(50,000)	(50,000)
Accumulated deficit	(71,788)	(44,899)
Accumulated other comprehensive loss	601	(4,652)
Total The Medicines Company stockholders' equity	910,988	892,497
Non-controlling interest in joint venture	(416)	(336)
Total stockholders' equity	910,572	892,161
Total liabilities and stockholders' equity	$ 1,829,384	$ 1,741,282