Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 376,727	$ 519,446
Available for sale securities	0	50,875
Accrued interest receivable	2	348
Accounts receivable, net of allowances of approximately $28.6 million and $17.7 million at December 31, 2013 and 2012	101,585	85,893
Inventory	87,105	76,355
Deferred tax assets	13,431	13,881
Prepaid expenses and other current assets	12,591	9,577
Total current assets	591,441	756,375
Fixed assets, net	39,268	16,100
Intangible assets, net	836,273	119,576
Goodwill	257,694	14,671
Restricted cash	1,574	1,571
Deferred tax assets	0	46,625
Other assets	15,032	17,264
Total assets	1,741,282	972,182
Current liabilities:
Accounts payable	26,911	25,378
Accrued expenses	142,290	107,453
Deferred revenue	5,052	2,375
Total current liabilities	174,253	135,206
Contingent purchase price	302,363	18,971
Convertible senior notes (due 2017)	236,088	226,109
Deferred tax liability	128,677	0
Other liabilities	7,740	5,674
Total liabilities	849,121	385,960
Stockholders' equity:
Preferred stock, $1.00 par value per share, 5,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $.001 par value per share, 125,000,000 shares authorized; 66,590,875 issued and 64,397,893 outstanding at December 31, 2013 and 56,153,140 issued and 53,960,158 outstanding at December 31, 2012	66	56
Additional paid-in capital	991,982	697,427
Treasury stock, at cost; 2,192,982 at December 31, 2013 and December 31, 2012	(50,000)	(50,000)
Accumulated deficit	(44,899)	(60,411)
Accumulated other comprehensive (loss)	(4,652)	(766)
Total The Medicines Company stockholders’ equity	892,497	586,306
Non-controlling interest in joint venture	(336)	(84)
Total stockholders’ equity	892,161	586,222
Total liabilities and stockholders’ equity	$ 1,741,282	$ 972,182