Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2015

Payables and Accruals [Abstract]

Schedule of Accrued liabilities

Accrued liabilities consisted of the following (in thousands):

	March 31, 2015		December 31, 2014
Accrued legal expenses	$	3,878	$	4,309
Accrued research and development expenses		2,679		2,724
Accrued clinical expenses		2,174		564
Accrued bonus expense		1,004		3,106
Accrued employee expenses		840		531
Accrued lab equipment		275		941
Accrued construction in progress		245		—
Accrued offering costs		—		1,456
Other		1,315		946
Total accrued liabilities	$	12,410	$	14,577