Debt Obligations - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended				2 Months Ended			0 Months Ended
	May 07, 2012	Mar. 31, 2013	Jan. 24, 2013	Dec. 31, 2012	Nov. 06, 2012	Jul. 31, 2012 June July 2012 Bridge Note	Mar. 31, 2013 June July 2012 Bridge Note	Dec. 31, 2011 June July 2012 Bridge Note	Jan. 24, 2013 January 2013 Bridge Notes	Mar. 31, 2013 January 2013 Bridge Notes	Dec. 31, 2011 January 2013 Bridge Notes	Jan. 24, 2013 January 2013 Bridge Notes Minimum	Mar. 31, 2013 Equipment [Member]	Nov. 06, 2012 Equipment [Member]	Nov. 06, 2012 Prepayment before November Sixth, Two Thousand Thirteen [Member]	Nov. 06, 2012 Prepayment between November Seventh, Two Thousand Thirteen and November Sixth, Two Thousand Fourteen [Member]	Nov. 06, 2012 Prepayemnt on or after November Seventh, Two Thousand Fourteen [Member]
Debt Instrument [Line Items]
Line credit facility, working capital advances	$ 10,000,000.0
Line credit facility, variable interest rate	5.25%
Line credit facility, rate above prime rate	2.00%
Line credit facility, expiration date	May 07, 2014
Line credit facility, minimum asset coverage ratio	1.25
Gross sale lease back amount					3,250,000								631,582	2,103,530
Amount in escrow account		1,146,470		1,146,470
Capital lease monthly payment				111,846
Capital lease final payment				691,846
Repayments of Long-term Capital Lease Obligations		335,537
Repayment of Long-term Capital Lease Obligations Associated with Implied Interest Cost		173,521
Capital Lease Obligation, Discount Rate for Lump Sum Prepayment Calculation															4.00%	18.00%	23.00%
Minimum lease payments under capital leases
Nine months ending December 31, 2013				1,006,610
Twelve months ending December 31, 2014				1,342,146
Twelve months ending December 31, 2015				1,810,301
Total minimum lease payments				4,159,057
Less: Amount representing interest				(1,174,962)
Total present value of net minimum lease payments				2,984,095
Less: Current portion of the present value of minimum lease payments				(736,737)
Capital lease obligation, net of current portion				2,247,358
Proceeds from sale of notes and warrants						7,100,000
Promissory note, interest rate						12.00%
Face amount of debt									1,800,000
Original issue discount							1,079,927	1,504,353	300,000	708,003	0
Adjusted total principal amount									1,625,000
Adjusted issue discount									125,000
Gross proceed from debt									1,500,000
Debt interest rate									18.00%
Bank Term Loan, monthly fixed cash payment									150,000
Net proceeds raised from non-dilutive financings or other capital raising transactions by April 30, 2013												3,000,000
Minimum percentage of principal amount of the June/July 2012 Bridge Notes									75.00%
Premium to Pay Investors If Company Fails to Repay Long-term Debt, Percent									20.00%
Percentage of Purchase Price Each Warrant Entitle Investor to Purchase									100.00%
Unit Purchase Price Each Warrant Entitle Investor to Purchase									$ 1.00
Class of Warrant or Right, Number of Securities Called by Warrants or Rights									1,500,000
Payment of private placement fees									112,500
Fair value of warrants			705,000
Remaining proceeds allocated to the debt instruments on a residual basis									795,000
Implied debt discount									1,005,000
Original debt issuance cost			137,500
Interest expense		64,625
Debt issuance cost		$ 72,875