Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)		3 Months Ended	12 Months Ended
	Oct. 10, 2017	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2019
Significant Accounting Policies [Line Items]
Entity Incorporation Date Of Incorporation			Jan. 11, 1991
Options and warrants excluded from the calculation of diluted shares			4,415,397	0	73,034
Production and importation permission description			22 million pounds in 2015 and was reduced by approximately 4.5 million pounds each year ending at zero in 2020.
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		$ 1,400,000
Payables to Customers		9,800,000	$ 11,700,000	$ 9,800,000
Business Combination, Consideration Transferred, Total	$ 209,000,000
Revenue from Contract with Customer, Including Assessed Tax			166,525,000	140,380,000	$ 105,481,000
Operating Loss Carryforwards			$ 38,300,000
Operating Loss Carryforwards, Limitations on Use			subject to annual limitations of 80% of earnings, $5.4 million expiring through 2023, which are subject to annual limitations of approximately $1.3 million
Operating Loss Carry Forwards Expirations Date			2021
Deferred Tax Assets, Valuation Allowance		0	$ 11,315,000	$ 0
Concentration Risk, Customer			one customer accounted for 11% of the Company’s revenues; no other customer accounted for greater than 10% of the Company’s revenues	two customers each accounted for 10% or more of the Company’s revenues and, in the aggregate these two customers accounted for 33% of the Company’s revenues.	two customers each accounted for 10% or more of the Company’s revenues and, in the aggregate these two customers accounted for 30% of the Company’s revenues.
No Expiration [Member]
Significant Accounting Policies [Line Items]
Operating Loss Carryforwards			$ 32,900,000
State and Local Jurisdiction [Member]
Significant Accounting Policies [Line Items]
Operating Loss Carryforwards			21,900,000
PNC Bank [Member]
Significant Accounting Policies [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	150,000,000		80,000,000
Debt Instrument, Face Amount			$ 29,000,000
Term Loan [Member]
Significant Accounting Policies [Line Items]
Debt Instrument, Face Amount	$ 105,000,000
Scenario, Plan [Member]
Significant Accounting Policies [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			21.00%
Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income				$ 2,400,000
Financial Service [Member]
Significant Accounting Policies [Line Items]
Revenue from Contract with Customer, Including Assessed Tax			$ 2,300,000	$ 2,300,000
Sales Revenue, Net [Member]
Significant Accounting Policies [Line Items]
Aggregate percentage of revenue the from customers accounted for more than 10%			10.00%	33.00%	30.00%
Customer
Significant Accounting Policies [Line Items]
Accounts Receivable, net		$ 2,700,000	$ 2,900,000	$ 2,700,000	$ 0
Subsequent Event [Member] | Accounting Standards Update 2016-09 [Member]
Significant Accounting Policies [Line Items]
Operating Lease, Right-of-Use Asset						$ 8,700,000
Operating Lease, Liability						$ 8,700,000