Notes Payable - Capital Lease - Additional Information (Detail) (USD $)	6 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Capital Leased Assets [Line Items]
Capital lease for equipment interest rate	7.25%
Capital leased assets, gross	$ 16,300	$ 0
Capital leases, lessee balance sheet, assets by major class, accumulated depreciation	390	0
Capital leases, lessee balance sheet, assets by major class, flight equipment, accumulated depreciation	$ 390	$ 0