Commitments and Contingencies - Additional Information (Detail)				3 Months Ended	6 Months Ended
	Apr. 29, 2016 USD ($)	Apr. 04, 2016 USD ($) a	Oct. 14, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Commitments and Contingencies [Line Items]
Property and equipment, net				$ 55,394,000	$ 55,394,000	$ 27,812,000
Restricted investments				150,000,000	150,000,000
Litigation, motion filed for reimbursement of costs and fees			$ 8,000,000
Term Loan Facility | Other Expense
Commitments and Contingencies [Line Items]
Interest expense				700,000	700,000
Bank of America N.A
Commitments and Contingencies [Line Items]
Cash collateral required for principal amount outstanding, percentage	100.00%
Wells Fargo Bank, National Association
Commitments and Contingencies [Line Items]
Cash collateral required for principal amount outstanding, percentage	100.00%
Bank of America N.A | Term Loan Facility
Commitments and Contingencies [Line Items]
Line of credit facility, maximum borrowing capacity	$ 120,000,000
Line of credit facility, expiration date	Apr. 29, 2021
Bank of America N.A | Term Loan Facility | LIBOR
Commitments and Contingencies [Line Items]
Debt instrument, basis spread on variable rate	0.45%
Wells Fargo Bank, National Association | Term Loan Facility
Commitments and Contingencies [Line Items]
Line of credit facility, maximum borrowing capacity	$ 30,000,000
Line of credit facility, expiration date	Apr. 29, 2021
Wells Fargo Bank, National Association | Term Loan Facility | LIBOR
Commitments and Contingencies [Line Items]
Debt instrument, basis spread on variable rate	0.45%
Norton, Massachusetts
Commitments and Contingencies [Line Items]
Payment to acquire land		$ 8,000,000
Undeveloped land acquired | a		12
Norton, Massachusetts | Land and costs related to the construction of manufacturing facility
Commitments and Contingencies [Line Items]
Property and equipment, net				$ 17,100,000	$ 17,100,000