Commitments - Additional Information (Detail)		1 Months Ended
	Jun. 09, 2017 USD ($) a	Oct. 31, 2017 USD ($)	Sep. 30, 2017 USD ($)	Jul. 25, 2017 USD ($) a	Jun. 30, 2017 USD ($)	Jun. 25, 2017 USD ($) a	Jan. 31, 2017 USD ($) a	Jun. 05, 2017 a
Commitments And Contingencies [Line Items]
Lease Expiration Date					Jul. 31, 2022
Area of Land | a								2,321
Operating Leases, Rent Expense					$ 2,693
Subsequent Event [Member]
Commitments And Contingencies [Line Items]
Increase Decrease In Monthly Operating Lease Rent Expenses		$ 8,542	$ 8,707
Fourth Amendment [Member]
Commitments And Contingencies [Line Items]
Area of Land | a							1,940
Fifth Amendment [Member]
Commitments And Contingencies [Line Items]
Area of Land | a							21,908
East Brunswick [Member] | Commitments [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date						Oct. 31, 2017
Area of Land | a						15,000
Operating Leases, Rent Expense						$ 6,563
Milford [Member] | Commitments [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date				Sep. 01, 2017
Area of Land | a				13,750
Operating Leases, Rent Expense				$ 8,307
San Diego, California [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date							Jul. 31, 2022
Increase Decrease In Monthly Operating Lease Rent Expenses							$ 2,596
San Diego, California [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Operating Leases, Rent Expense							22,721
San Diego, California [Member] | Minimum [Member]
Commitments And Contingencies [Line Items]
Operating Leases, Rent Expense							$ 20,125
New York [Member] | Commitments [Member]
Commitments And Contingencies [Line Items]
Lease Expiration Date	Jun. 30, 2018
Area of Land | a	12,000
Operating Leases, Rent Expense	$ 13,000