Accrued Expenses
9 Months Ended
Sep. 30, 2012
Payables and Accruals [Abstract]  
Accrued Expenses
Accrued Expenses

The components of accrued expenses at September 30, 2012 and December 31, 2011 are as follows:
 
September 30, 2012
 
December 31, 2011
Accrued compensation
$
1,586,529

 
$
1,710,448

Accrued rebates
1,960,699

 
1,557,081

Deferred rent
1,130,915

 
706,188

Other
2,248,737

 
1,221,828

Total accrued expenses
$
6,926,880

 
$
5,195,545