Aspen Aerogels (ASPN) 10-Q 3 Nov 16 2016 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Oct. 31, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	Q3
Trading Symbol	ASPN
Entity Registrant Name	ASPEN AEROGELS INC
Entity Central Index Key	1,145,986
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		23,366,937

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 21,129	$ 32,804
Accounts receivable, net of allowances of $101 and $89, respectively	19,625	20,624
Inventories	12,902	6,532
Prepaid expenses and other current assets	1,831	1,687
Total current assets	55,487	61,647
Property, plant and equipment, net	81,905	78,322
Other assets	79	105
Total assets	137,471	140,074
Current liabilities:
Capital leases, current portion	41	67
Accounts payable	11,544	10,684
Accrued expenses	4,145	5,568
Deferred revenue	753	681
Other current liabilities		409
Total current liabilities	16,483	17,409
Capital leases, excluding current portion	11	40
Other long-term liabilities	703	151
Total liabilities	17,197	17,600
Commitments and contingencies (Note 6)
Stockholders' equity:
Preferred stock, $0.00001 par value; 5,000,000 shares authorized, no shares issued and outstanding at September 30, 2016 and December 31, 2015
Common stock, $0.00001 par value; 125,000,000 shares authorized, 23,366,937 and 23,184,852 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively	0	0
Additional paid-in capital	532,056	527,975
Accumulated deficit	(411,782)	(405,501)
Total stockholders' equity	120,274	122,474
Total liabilities and stockholders' equity	$ 137,471	$ 140,074

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 101	$ 89
Preferred stock, par value	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	125,000,000	125,000,000
Common stock, shares issued	23,366,937	23,184,852
Common stock, shares outstanding	23,366,937	23,184,852

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Revenue:
Product	$ 28,877	$ 30,926	$ 88,286	$ 83,891
Research services	683	613	1,813	1,243
Total revenue	29,560	31,539	90,099	85,134
Cost of revenue:
Product	22,790	26,017	69,505	69,676
Research services	368	350	1,012	663
Gross profit	6,402	5,172	19,582	14,795
Operating expenses:
Research and development	1,328	1,146	3,924	4,001
Sales and marketing	3,056	2,793	8,939	7,847
General and administrative	4,422	3,709	12,229	10,866
Total operating expenses	8,806	7,648	25,092	22,714
Loss from operations	(2,404)	(2,476)	(5,510)	(7,919)
Other expense, net
Interest expense, net	(37)	(46)	(115)	(136)
Postponed financing costs	(656)		(656)
Total other expense, net	(693)	(46)	(771)	(136)
Net loss	$ (3,097)	$ (2,522)	$ (6,281)	$ (8,055)
Net loss per share:
Basic	$ (0.13)	$ (0.11)	$ (0.27)	$ (0.35)
Diluted	$ (0.13)	$ (0.11)	$ (0.27)	$ (0.35)
Weighted-average common shares outstanding:
Basic and diluted	23,168,251	23,060,456	23,114,280	23,017,822

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net loss	$ (6,281)	$ (8,055)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	7,298	7,422
Stock-compensation expense	4,277	4,175
Settlement of asset retirement obligation		(14)
Postponed financing costs	656
Changes in operating assets and liabilities:
Accounts receivable	999	(5,425)
Inventories	(6,370)	(1,732)
Prepaid expenses and other assets	189	(1,001)
Accounts payable	(17)	1,504
Accrued expenses	(2,189)	(1,123)
Deferred revenue	72	4,167
Net cash used in operating activities	(1,366)	(82)
Cash flows from investing activities:
Capital expenditures	(9,994)	(19,377)
Purchases of marketable securities		(2,500)
Maturity and sale of marketable securities		2,500
Net cash used in investing activities	(9,994)	(19,377)
Cash flows from financing activities:
Repayment of obligations under capital lease	(55)	(58)
Payments made for employee restricted stock tax withholdings	(196)	(238)
Payment of deferred financing costs	(64)
Net cash used in financing activities	(315)	(296)
Net decrease in cash	(11,675)	(19,755)
Cash at beginning of period	32,804	49,719
Cash at end of period	21,129	29,964
Supplemental disclosures of cash flow information:
Interest paid	153	149
Income taxes paid	0	0
Supplemental disclosures of non-cash activities:
Changes in accrued capital expenditures	602	(6,112)
Changes in building lease incentives	268
Advanced billings		1,142
Unpaid financing costs	(592)
Capitalized leases		$ 21
Settlement of asset retirement obligation	$ 241

Description of Business and Bas

Description of Business and Basis of Presentation	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Description of Business and Basis of Presentation	(1) Description of Business and Basis of Presentation Nature of Business Aspen Aerogels, Inc. (the Company) is an aerogel technology company that designs, develops and manufactures innovative, high-performance aerogel insulation used primarily in the energy infrastructure and building materials markets. The Company also conducts research and development related to aerogel technology supported by funding from several agencies of the U.S. government and other institutions in the form of research and development contracts. The Company maintains its corporate offices in Northborough, Massachusetts. The Company has three wholly owned subsidiaries: Aspen Aerogels Rhode Island, LLC, Aspen Aerogels Germany, GmbH and Aspen Aerogels Georgia, LLC, which was formed in August 2016. Unaudited Interim Financial Information The accompanying unaudited interim consolidated financial statements include the accounts of the Company and have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and disclosures normally included in the consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and accompanying notes in our Annual Report on Form 10-K for the year ended December 31, 2015 (the Annual Report), filed with the Securities and Exchange Commission on March 4, 2016. In the opinion of the Company’s management, the unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments that are of a normal recurring nature and necessary for the fair statement of the Company’s financial position as of September 30, 2016 and the results of its operations for the three and nine months ended September 30, 2016 and 2015 and the cash flows for the nine months then ended. The Company has evaluated events through the date of this filing. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected for the year ending December 31, 2016 or any other period. There have been no changes to the Company’s significant accounting policies described in the Annual Report that have had a material impact on the Company’s consolidated financial statements and notes thereto. Principles of Consolidation The accompanying consolidated financial statements, which have been prepared in accordance with U.S. GAAP, include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

Significant Accounting Policies

Significant Accounting Policies	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	(2) Significant Accounting Policies Use of Estimates The preparation of the consolidated financial statements requires the Company to make a number of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include allowances for doubtful accounts, sales returns and allowances, product warranty costs, inventory valuation, the carrying amount of property and equipment, stock-based compensation and deferred income taxes. The Company evaluates its estimates and assumptions on an on-going basis using historical experience and other factors, including the current economic environment, which is believed to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets and declines in business investment increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods. Cash and Cash Equivalents Cash equivalents include short-term, highly liquid instruments, which consist of money market accounts. All cash and cash equivalents are maintained with major financial institutions in North America. Deposits with these financial institutions may exceed the amount of insurance provided on such deposits; however, these deposits typically may be redeemed upon demand and, therefore, bear minimal risk. Concentration of Credit Risk For the three months ended September 30, 2016, three customers represented 32%, 13% and 10% of total revenue. For the three months ended September 30, 2015, three customers represented 13%, 12% and 11% of total revenue. For the nine months ended September 30, 2016, two customers represented 20% and 14% of total revenue. For the nine months ended September 30, 2015, two customers represented 15% and 15% of total revenue. At September 30, 2016, the Company had two customers that accounted for 30% and 15% of accounts receivable. At December 31, 2015, the Company had three customers that accounted for 17%, 14% and 13% of accounts receivable. Revenue Recognition The Company recognizes revenue from the sale of products and delivery of research and development services. Revenue is recognized when all of the following criteria are met: persuasive evidence of an arrangement exists, the price to the buyer is fixed or determinable, delivery has occurred or services have been provided, and collectability is reasonably assured. Product Revenue Product revenue is recognized upon transfer of title and risk of loss, which is upon shipment or delivery. The Company’s customary shipping terms are free on board (FOB) shipping point. The Company records deferred revenue for product sales when (i) the Company has delivered products but other revenue recognition criteria have not been satisfied or (ii) payments have been received in advance of products being delivered. Research Services Revenue The Company performs research services under contracts with various government agencies and other institutions. The Company records revenue earned on research services contracts using the percentage-of-completion method in two ways: (1) for firm-fixed-price contracts, the Company accrues that portion of the total contract price that is allocable, on the basis of the Company’s estimates of costs incurred to date to total contract costs; and (2) for cost-plus-fixed-fee contracts, the Company records revenue that is equal to total payroll cost incurred times a stated factor plus reimbursable expenses, to a stated upper limit. The primary cost is the labor effort expended in completing research, and the only deliverable, other than the labor hours expended, is reporting of research results to the customer. Because the input measure of labor hours expended is also reflective of the output measure, it is a reliable means to measure the extent of progress towards completion. Revisions in cost estimates and fees during the course of the contract are reflected in the accounting period in which the facts that require the revisions become known. Contract costs and rates used to allocate overhead to contracts are subject to audit by the respective contracting government agency. Adjustments to revenue as a result of audit are recorded in the period they become known. To date, adjustments to revenue as a result of audit have been insignificant. Stock-based Compensation Stock-based compensation expense is measured at the grant date based on the fair value of the award. Expense is recognized on a straight-line basis over the requisite service period for all awards with service conditions. For performance-based awards, the grant date fair value is recognized as expense when the condition is probable of being achieved, and then on a graded basis over the requisite service period. The Company uses the Black-Scholes option-pricing model to determine the fair value of service-based option awards, which requires a number of complex and subjective assumptions including fair value of the underlying security, the expected volatility of the underlying security, a risk-free interest rate and the expected term of the option. The fair value of restricted stock and restricted stock unit grants is determined using the closing trading price of the Company’s common stock on the date of grant. The fair value of awards containing market conditions is determined using a Monte Carlo simulation model based upon the terms of the conditions, the expected volatility of the underlying security, and other relevant factors. During the nine months ended September 30, 2016, the Company granted 75,152 shares of restricted common stock and non-qualified Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Cost of product revenue $ 241 $ 241 $ 632 $ 647 Research and development expenses 184 181 472 544 Sales and marketing expenses 314 288 852 774 General and administrative expenses 735 766 2,321 2,210 Total stock-based compensation $ 1,474 $ 1,476 $ 4,277 $ 4,175 Pursuant to the “evergreen” provisions of the 2014 Equity Plan, the number of shares of common stock authorized for issuance under the plan automatically increased by 463,697 shares to 6,069,201 shares effective January 1, 2016. As of September 30, 2016, 2,628,813 shares of common stock were reserved for issuance upon the exercise or vesting, as appropriate, of outstanding stock-based awards granted under the 2014 Equity Plan. In addition, as of September 30, 2016, 93,014 shares of common stock were reserved for issuance upon the exercise of outstanding stock options granted under the Company’s 2001 Equity Incentive Plan, as amended (the 2001 Equity Plan). Any cancellations or forfeitures of the options outstanding under the 2001 Equity Plan will result in the shares reserved for issuance upon exercise of such options becoming available for grant under the 2014 Equity Plan. As of September 30, 2016, there were 2,845,219 shares of common stock available for grant under the 2014 Equity Plan. Earnings per Share The Company calculates net loss per common share based on the weighted-average number of common shares outstanding during each period. Potential common stock equivalents are determined using the treasury stock method. The weighted-average number of common shares included in the computation of diluted net loss gives effect to all potentially dilutive common equivalent shares, including outstanding stock options, RSUs and warrants. Common equivalent shares are excluded from the computation of diluted net loss per share if their effect is antidilutive. Segments Operating segments are identified as components of an enterprise about which separate, discrete financial information is available for evaluation by the chief operating decision maker in making decisions on how to allocate resources and assess performance. The Company’s chief operating decision maker is the Chief Executive Officer. The Company’s chief operating decision maker reviews consolidated operating results to make decisions about allocating resources and assessing performance for the entire Company. The Company views its operations and manages its business as one operating segment. Information about the Company’s total revenues, based on shipment destination or services location, is presented in the following table: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Revenue: U.S. $ 6,850 $ 12,088 $ 28,471 $ 33,810 International 22,710 19,451 61,628 51,324 Total $ 29,560 $ 31,539 $ 90,099 $ 85,134 Warranty Costs The Company provides warranties for its products and records the estimated cost within cost of sales in the period that the related revenue is recorded. The Company’s standard warranty period extends to one year from the date of shipment. The standard warranties provide that the Company’s products will be free from defects in material and workmanship, and will, under normal use, conform to the specifications for the product. Historically, warranty claims and charges have been insignificant. The Company’s products may be utilized in systems that may involve new technical demands and new configurations. As such, the Company will continue to regularly review and assess whether warranty reserves shall be recorded in the period the related revenue is recorded. For initial shipments of products where the Company is unsure of meeting the customer’s specifications, the Company will defer the recognition of product revenue and related costs until written customer acceptance is obtained. During the nine months ended September 30, 2016, the Company recorded warranty expense of $0.5 million. This specific reserve was principally related to product warranty claims for a specific project. These claims were outside of the Company’s typical experience. As of September 30, 2016, the Company had satisfied all outstanding warranty claims. Additionally, during the nine months ended September 30, 2016, a customer notified the Company of a specific product application issue. The customer continues to request and receive shipment of additional aerogel product and no claim has been made. The Company cannot be certain that it will not be subject to a warranty claim. Recently Issued Accounting Standards In August 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). This amendment addresses eight classification issues related to the statement of cash flows. For public business entities, the amendments in ASU 2016-15 In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). The amendment is to simplify several aspects of the accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public entities, the amendments in ASU 2016-09 are effective for interim and annual reporting periods beginning after December 15, 2016. The Company does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (FASB ASU 2016-02). FASB ASU 2016-02 changes the accounting for leases and includes a requirement to record all leases on the consolidated balance sheets as assets and liabilities. This update is effective for fiscal years beginning after December 15, 2018. Early application is permitted. The Company has not yet selected a transition method and is evaluating the effect the updated standard will have on its consolidated financial statements and related disclosures. In August 2015, the FASB issued a deferral of ASU 2014-09, Revenue from Contracts with Customers. The standard will eliminate the transaction- and industry-specific revenue recognition guidance under current U.S. GAAP and replace it with a principle based approach for determining revenue recognition. As a result of the deferral, public entities are required to apply the revenue recognition standard for the annual reporting period beginning on or after December 15, 2017, including interim periods within that annual reporting period. Early application is not permitted. The Company has not yet selected a transition method and is evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330), which, for entities that do not measure inventory using the last-in, first-out (LIFO) or retail inventory method, changes the measurement principle for inventory from the lower of cost or market to lower of cost and net realizable value. The ASU also eliminates the requirement for these entities to consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory. Public entities are required to apply the standards for fiscal years beginning after December 15, 2016, including interim periods within those fiscal periods. Early adoption is permitted as of the beginning of an interim or annual period. The Company does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition.

Inventories

Inventories	9 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Inventories	(3) Inventories Inventories consist of the following: September 30, December 31, (In thousands) Raw materials $ 3,862 $ 4,432 Finished goods 9,040 2,100 Total $ 12,902 $ 6,532

Property, Plant and Equipment,

Property, Plant and Equipment, Net	9 Months Ended
	Sep. 30, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment, Net	(4) Property, Plant and Equipment, Net Property, plant and equipment consist of the following: September 30, December 31, Useful life (In thousands) Construction in progress $ 10,830 $ 5,138 — Buildings 23,901 23,884 30 years Machinery and equipment 109,156 104,658 3-10 years Computer equipment and software 7,472 6,888 3 years Total 151,359 140,568 Accumulated depreciation (69,454 ) (62,246 ) Property, plant and equipment, net $ 81,905 $ 78,322 Depreciation expense was $7.3 million and $7.4 million for the nine months ended September 30, 2016 and 2015, respectively. Construction in progress totaled $10.8 million and $5.1 million at September 30, 2016 and December 31, 2015, respectively, which included engineering designs and other pre-construction costs for the planned manufacturing facility in Statesboro, Georgia of $6.3 million and $2.3 million at September 30, 2016 and December 31, 2015, respectively.

Accrued Expenses

Accrued Expenses	9 Months Ended
	Sep. 30, 2016
Payables and Accruals [Abstract]
Accrued Expenses	(5) Accrued Expenses Accrued expenses consist of the following: September 30, December 31, (In thousands) Employee compensation $ 2,452 $ 4,184 Other accrued expenses 1,693 1,384 Total $ 4,145 $ 5,568

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	(6) Commitments and Contingencies Customer Supply Agreement On June 21, 2016, the Company entered into a supply agreement and a side agreement (together, the supply agreement) and a joint development agreement with BASF SE (BASF). Pursuant to the supply agreement, the Company will sell exclusively to BASF the Company’s Spaceloft ® In addition, BASF will make a non-interest bearing prepayment to the Company in the aggregate amount of $22 million during the construction of the planned manufacturing facility in Statesboro, Georgia (Plant Two), subject to the Company’s prior satisfaction of certain preconditions related to the finalization of certain aspects of the product specification and the progress of the financing and construction of Plant Two, including securing a debt commitment from a third party lender for at least $30 million. BASF is obligated to pay the prepayment to the Company in eight equal consecutive quarterly installments commencing on the later of (i) October 1, 2016 or (ii) the first day of the calendar quarter following the date on which the Plant Two progress preconditions are met. Once commenced, BASF’s obligation to make such quarterly payments shall be subject to postponement in the event of delays of three months or more in the projected date of completion of Plant Two by a commensurate number of months. After October 1, 2018, the Company will, at BASF’s instruction, credit up to 25.3% of any amounts invoiced by the Company for Spaceloft ® As of September 30, 2016, the Company anticipates that the general uncertainty in the energy markets and recent weakness in the downstream markets will continue into 2017. With this view of the market, the Company had elected to temporarily delay the board approved Plant Two project and its related financing to better align the capacity expansion with the Company’s assessment of demand for the 2018 to 2020 period. As a result, the Company has yet to fulfill certain of the prepayment preconditions and commencement of the quarterly prepayments from BASF will be delayed until such preconditions are satisfied. Financing Costs During the nine months ended September 30, 2016, the Company engaged with a third party lender to secure a debt commitment to support the construction of Plant Two. During the three months ended September 2016, the Company decided, at its sole discretion, to temporarily delay both the Plant Two project and its related financing to better align the capacity expansion with the Company’s assessment of demand for the 2018 to 2020 period. In addition, the Company anticipates that debt commitments from third party lenders will be postponed for a period of at least six months. As a result, the Company recorded a $0.6 million charge included in other expense, net for postponed financing costs. The charge included legal fees incurred by the Company itself and on behalf of the potential lender. Asset Retirement Obligation As of December 31, 2015, the Company had asset retirement obligations (ARO) arising from requirements to perform certain asset retirement activities upon the termination of its Northborough, Massachusetts facility lease and upon disposal of certain machinery and equipment. During the nine months ended September 30, 2016, the Company incurred approximately $0.2 million in expenditures in support of completing the restoration of 31,577 square feet of space formerly utilized for manufacturing operations in the Northborough, Massachusetts facility. This manufacturing space was vacated and returned to the landlord on July 1, 2016. On June 29, 2016, the Company executed an agreement to remain at the Northborough, Massachusetts facility through December 31, 2026. As part of the new agreement, the Company’s obligation to restore the remaining space in the Northborough facility was eliminated. The settlement of the remaining reserve balance of approximately $0.2 million was reclassified to accrued expenses and will be amortized as a reduction to rent expense over the term of the new lease agreement. Nine Months Ended 2016 (In thousands) Balance at beginning of period $ 397 Expenditures (156 ) Settlement of asset retirement obligation (241 ) Balance at end of period $ — Revolving Line of Credit The Company maintains a revolving credit facility with Silicon Valley Bank. On August 19, 2016, the Company amended the Amended and Restated Loan and Security Agreement with Silicon Valley Bank, which was originally effective from August 31, 2014 to August 31, 2016 (the Credit Facility), pursuant to which, the Credit Facility’s maturity date was extended to November 29, 2016. The Company may borrow up to $20 million under the facility subject to compliance with certain covenants and borrowing base limitations. At the Company’s election, the interest rate applicable to borrowings under the revolving credit facility may be based on the prime rate or LIBOR. Prime rate-based rates vary from prime rate plus 0.75% per annum to prime rate plus 1.75% per annum, while LIBOR-based rates vary from LIBOR plus 3.75% per annum to LIBOR plus 4.25% per annum. In addition, the Company is required to pay a monthly unused revolving line facility fee of 0.5% per annum of the average unused portion of the revolving credit facility. The revolving credit facility is secured by a first priority security interest in all assets of the Company, including those at the East Providence facility, except for certain exclusions. At both September 30, 2016 and December 31, 2015, the Company had no amounts drawn on the revolving credit facility. Under the revolving credit facility, the Company is required to comply with financial covenants relating to, among other items, minimum Adjusted EBITDA, maximum unfinanced capital expenditures and other non-financial covenants. At September 30, 2016, the Company was in compliance with all such financial covenants. Pursuant to the terms of its existing Northborough, Massachusetts facility lease, the Company has been required to provide the landlord with letters of credit securing certain obligations. In addition, the Company has been required to provide certain customers with letters of credit securing obligations under commercial contracts. The Company had outstanding letters of credit backed by the revolving credit facility of $2.5 million and $2.7 million September 30, 2016 and December 31, 2015, respectively, which reduce the funds otherwise available to the Company under the revolving credit facility. Based on the available borrowing base and net of the $2.5 million of outstanding letters of credit, the amount available to the Company under the revolving credit facility at September 30, 2016 was $12.5 million. Litigation The Company is, from time to time, a party to litigation that arises in the normal course of its business operations. See Part II, Item 1 (“Legal Proceedings”) of this Quarterly Report on Form 10-Q for a description of certain of the Company’s current legal proceedings. The Company is not presently a party to any litigation for which it believes a loss is probable requiring an amount to be accrued or a possible loss contingency requiring disclosure. Operating Leases On June 29, 2016, the Company entered into a new agreement with Cabot II- MA1M03, LLC (Cabot Properties) to lease approximately 51,650 square feet of office space in Northborough, MA, the location of the Company’s current headquarters. The new lease follows the existing lease between the Company and Cabot Properties that expires on December 31, 2016. The lease term will commence on January 1, 2017 and expire on December 31, 2026. The annual base rent associated with the lease will be approximately $408,000 during the first year of the lease, and increase by approximately 3% annually for the term of the lease. The lease also provides for the payment by the Company of its pro rata share of real estate taxes and certain other expenses. Prior to the expiration of the lease term, the Company will have the right to extend the lease for an additional term of three years. Under the terms of the new lease, Cabot Properties will provide the Company with an allowance of up to $1.2 million to be utilized for improvements to the leased premises. The Company will account for the reimbursements from Cabot Properties for such improvements as a lease obligation incentive. In addition, the new lease eliminated the Company’s asset retirement obligations under the existing lease. The settlement of the remaining asset retirement reserve balance of approximately $0.2 million was reclassified to other liabilities. These amounts will be recorded as a component of deferred rent in determining the minimum lease payments for the property. As of September 30, 2016, the Company had capitalized $0.4 million in leasehold improvement costs.

Net Loss Per Share

Net Loss Per Share	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Net Loss Per Share	(7) Net Loss Per Share The computation of basic and diluted net loss per share consists of the following: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands, except share and per share data) Numerator: Net loss $ (3,097 ) $ (2,522 ) $ (6,281 ) $ (8,055 ) Denominator: Weighted average shares outstanding, basic and diluted 23,168,251 23,060,456 23,114,280 23,017,822 Net loss per share, basic and diluted $ (0.13 ) $ (0.11 ) $ (0.27 ) $ (0.35 ) Potentially dilutive common shares that were excluded from the computation of diluted net loss per share because they were anti-dilutive consist of the following: Three Months Ended Nine Months Ended 2016 2015 2016 2015 Common stock options 2,044,840 1,224,279 2,044,840 1,224,279 Restricted common stock units 677,001 405,463 677,001 405,463 Common stock warrants 115 131 115 131 Restricted common stock awards 153,277 54,005 153,277 54,005 Total 2,875,233 1,683,878 2,875,233 1,683,878 In the table above, anti-dilutive shares consist of those common stock equivalents that have (i) an exercise price that exceeds the average stock price for the period or (ii) related average unrecognized stock compensation expense sufficient to buy-back the entire amount of shares. The Company excludes the shares issued in connection with restricted stock awards from the calculation of basic weighted average common shares outstanding until the restrictions lapse.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	(8) Income Taxes The Company incurred net operating losses and recorded a full valuation allowance against net deferred tax assets for all periods presented. Accordingly, the Company has not recorded a provision for federal or state income taxes.

Description of Business and B14

Description of Business and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Nature of Business	Nature of Business Aspen Aerogels, Inc. (the Company) is an aerogel technology company that designs, develops and manufactures innovative, high-performance aerogel insulation used primarily in the energy infrastructure and building materials markets. The Company also conducts research and development related to aerogel technology supported by funding from several agencies of the U.S. government and other institutions in the form of research and development contracts. The Company maintains its corporate offices in Northborough, Massachusetts. The Company has three wholly owned subsidiaries: Aspen Aerogels Rhode Island, LLC, Aspen Aerogels Germany, GmbH and Aspen Aerogels Georgia, LLC, which was formed in August 2016.
Unaudited Interim Financial Information	Unaudited Interim Financial Information The accompanying unaudited interim consolidated financial statements include the accounts of the Company and have been prepared in accordance with accounting principles generally accepted in the United States of America (U.S. GAAP) and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain information and disclosures normally included in the consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted pursuant to such rules and regulations. As such, the information included in this quarterly report on Form 10-Q should be read in conjunction with the audited consolidated financial statements and accompanying notes in our Annual Report on Form 10-K for the year ended December 31, 2015 (the Annual Report), filed with the Securities and Exchange Commission on March 4, 2016. In the opinion of the Company’s management, the unaudited interim consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments that are of a normal recurring nature and necessary for the fair statement of the Company’s financial position as of September 30, 2016 and the results of its operations for the three and nine months ended September 30, 2016 and 2015 and the cash flows for the nine months then ended. The Company has evaluated events through the date of this filing. The results of operations for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected for the year ending December 31, 2016 or any other period. There have been no changes to the Company’s significant accounting policies described in the Annual Report that have had a material impact on the Company’s consolidated financial statements and notes thereto.
Principles of Consolidation	Principles of Consolidation The accompanying consolidated financial statements, which have been prepared in accordance with U.S. GAAP, include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements requires the Company to make a number of estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include allowances for doubtful accounts, sales returns and allowances, product warranty costs, inventory valuation, the carrying amount of property and equipment, stock-based compensation and deferred income taxes. The Company evaluates its estimates and assumptions on an on-going basis using historical experience and other factors, including the current economic environment, which is believed to be reasonable under the circumstances. Management adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets and declines in business investment increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in these estimates resulting from continuing changes in the economic environment will be reflected in the financial statements in future periods.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash equivalents include short-term, highly liquid instruments, which consist of money market accounts. All cash and cash equivalents are maintained with major financial institutions in North America. Deposits with these financial institutions may exceed the amount of insurance provided on such deposits; however, these deposits typically may be redeemed upon demand and, therefore, bear minimal risk.
Concentration of Credit Risk	Concentration of Credit Risk For the three months ended September 30, 2016, three customers represented 32%, 13% and 10% of total revenue. For the three months ended September 30, 2015, three customers represented 13%, 12% and 11% of total revenue. For the nine months ended September 30, 2016, two customers represented 20% and 14% of total revenue. For the nine months ended September 30, 2015, two customers represented 15% and 15% of total revenue. At September 30, 2016, the Company had two customers that accounted for 30% and 15% of accounts receivable. At December 31, 2015, the Company had three customers that accounted for 17%, 14% and 13% of accounts receivable.
Revenue Recognition	Revenue Recognition The Company recognizes revenue from the sale of products and delivery of research and development services. Revenue is recognized when all of the following criteria are met: persuasive evidence of an arrangement exists, the price to the buyer is fixed or determinable, delivery has occurred or services have been provided, and collectability is reasonably assured.
Product Revenue	Product Revenue Product revenue is recognized upon transfer of title and risk of loss, which is upon shipment or delivery. The Company’s customary shipping terms are free on board (FOB) shipping point. The Company records deferred revenue for product sales when (i) the Company has delivered products but other revenue recognition criteria have not been satisfied or (ii) payments have been received in advance of products being delivered.
Research Services Revenue	Research Services Revenue The Company performs research services under contracts with various government agencies and other institutions. The Company records revenue earned on research services contracts using the percentage-of-completion method in two ways: (1) for firm-fixed-price contracts, the Company accrues that portion of the total contract price that is allocable, on the basis of the Company’s estimates of costs incurred to date to total contract costs; and (2) for cost-plus-fixed-fee contracts, the Company records revenue that is equal to total payroll cost incurred times a stated factor plus reimbursable expenses, to a stated upper limit. The primary cost is the labor effort expended in completing research, and the only deliverable, other than the labor hours expended, is reporting of research results to the customer. Because the input measure of labor hours expended is also reflective of the output measure, it is a reliable means to measure the extent of progress towards completion. Revisions in cost estimates and fees during the course of the contract are reflected in the accounting period in which the facts that require the revisions become known. Contract costs and rates used to allocate overhead to contracts are subject to audit by the respective contracting government agency. Adjustments to revenue as a result of audit are recorded in the period they become known. To date, adjustments to revenue as a result of audit have been insignificant.
Stock-based Compensation	Stock-based Compensation Stock-based compensation expense is measured at the grant date based on the fair value of the award. Expense is recognized on a straight-line basis over the requisite service period for all awards with service conditions. For performance-based awards, the grant date fair value is recognized as expense when the condition is probable of being achieved, and then on a graded basis over the requisite service period. The Company uses the Black-Scholes option-pricing model to determine the fair value of service-based option awards, which requires a number of complex and subjective assumptions including fair value of the underlying security, the expected volatility of the underlying security, a risk-free interest rate and the expected term of the option. The fair value of restricted stock and restricted stock unit grants is determined using the closing trading price of the Company’s common stock on the date of grant. The fair value of awards containing market conditions is determined using a Monte Carlo simulation model based upon the terms of the conditions, the expected volatility of the underlying security, and other relevant factors. During the nine months ended September 30, 2016, the Company granted 75,152 shares of restricted common stock and non-qualified Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Cost of product revenue $ 241 $ 241 $ 632 $ 647 Research and development expenses 184 181 472 544 Sales and marketing expenses 314 288 852 774 General and administrative expenses 735 766 2,321 2,210 Total stock-based compensation $ 1,474 $ 1,476 $ 4,277 $ 4,175 Pursuant to the “evergreen” provisions of the 2014 Equity Plan, the number of shares of common stock authorized for issuance under the plan automatically increased by 463,697 shares to 6,069,201 shares effective January 1, 2016. As of September 30, 2016, 2,628,813 shares of common stock were reserved for issuance upon the exercise or vesting, as appropriate, of outstanding stock-based awards granted under the 2014 Equity Plan. In addition, as of September 30, 2016, 93,014 shares of common stock were reserved for issuance upon the exercise of outstanding stock options granted under the Company’s 2001 Equity Incentive Plan, as amended (the 2001 Equity Plan). Any cancellations or forfeitures of the options outstanding under the 2001 Equity Plan will result in the shares reserved for issuance upon exercise of such options becoming available for grant under the 2014 Equity Plan. As of September 30, 2016, there were 2,845,219 shares of common stock available for grant under the 2014 Equity Plan.
Earnings per Share	Earnings per Share The Company calculates net loss per common share based on the weighted-average number of common shares outstanding during each period. Potential common stock equivalents are determined using the treasury stock method. The weighted-average number of common shares included in the computation of diluted net loss gives effect to all potentially dilutive common equivalent shares, including outstanding stock options, RSUs and warrants. Common equivalent shares are excluded from the computation of diluted net loss per share if their effect is antidilutive.
Segments	Segments Operating segments are identified as components of an enterprise about which separate, discrete financial information is available for evaluation by the chief operating decision maker in making decisions on how to allocate resources and assess performance. The Company’s chief operating decision maker is the Chief Executive Officer. The Company’s chief operating decision maker reviews consolidated operating results to make decisions about allocating resources and assessing performance for the entire Company. The Company views its operations and manages its business as one operating segment. Information about the Company’s total revenues, based on shipment destination or services location, is presented in the following table: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Revenue: U.S. $ 6,850 $ 12,088 $ 28,471 $ 33,810 International 22,710 19,451 61,628 51,324 Total $ 29,560 $ 31,539 $ 90,099 $ 85,134
Warranty Costs	Warranty Costs The Company provides warranties for its products and records the estimated cost within cost of sales in the period that the related revenue is recorded. The Company’s standard warranty period extends to one year from the date of shipment. The standard warranties provide that the Company’s products will be free from defects in material and workmanship, and will, under normal use, conform to the specifications for the product. Historically, warranty claims and charges have been insignificant. The Company’s products may be utilized in systems that may involve new technical demands and new configurations. As such, the Company will continue to regularly review and assess whether warranty reserves shall be recorded in the period the related revenue is recorded. For initial shipments of products where the Company is unsure of meeting the customer’s specifications, the Company will defer the recognition of product revenue and related costs until written customer acceptance is obtained. During the nine months ended September 30, 2016, the Company recorded warranty expense of $0.5 million. This specific reserve was principally related to product warranty claims for a specific project. These claims were outside of the Company’s typical experience. As of September 30, 2016, the Company had satisfied all outstanding warranty claims. Additionally, during the nine months ended September 30, 2016, a customer notified the Company of a specific product application issue. The customer continues to request and receive shipment of additional aerogel product and no claim has been made. The Company cannot be certain that it will not be subject to a warranty claim
Recently Issued Accounting Standards	Recently Issued Accounting Standards In August 2016, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). This amendment addresses eight classification issues related to the statement of cash flows. For public business entities, the amendments in ASU 2016-15 In March 2016, the FASB issued ASU No. 2016-09, Compensation – Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting (ASU 2016-09). The amendment is to simplify several aspects of the accounting for share-based payment transactions including the income tax consequences, classification of awards as either equity or liabilities, and classification on the statement of cash flows. For public entities, the amendments in ASU 2016-09 are effective for interim and annual reporting periods beginning after December 15, 2016. The Company does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842) (FASB ASU 2016-02). FASB ASU 2016-02 changes the accounting for leases and includes a requirement to record all leases on the consolidated balance sheets as assets and liabilities. This update is effective for fiscal years beginning after December 15, 2018. Early application is permitted. The Company has not yet selected a transition method and is evaluating the effect the updated standard will have on its consolidated financial statements and related disclosures. In August 2015, the FASB issued a deferral of ASU 2014-09, Revenue from Contracts with Customers. The standard will eliminate the transaction- and industry-specific revenue recognition guidance under current U.S. GAAP and replace it with a principle based approach for determining revenue recognition. As a result of the deferral, public entities are required to apply the revenue recognition standard for the annual reporting period beginning on or after December 15, 2017, including interim periods within that annual reporting period. Early application is not permitted. The Company has not yet selected a transition method and is evaluating the effect that the updated standard will have on its consolidated financial statements and related disclosures. In July 2015, the FASB issued ASU 2015-11, Inventory (Topic 330), which, for entities that do not measure inventory using the last-in, first-out (LIFO) or retail inventory method, changes the measurement principle for inventory from the lower of cost or market to lower of cost and net realizable value. The ASU also eliminates the requirement for these entities to consider replacement cost or net realizable value less an approximately normal profit margin when measuring inventory. Public entities are required to apply the standards for fiscal years beginning after December 15, 2016, including interim periods within those fiscal periods. Early adoption is permitted as of the beginning of an interim or annual period. The Company does not expect adoption of this standard to have a material impact on its consolidated results of operations and financial condition.

Significant Accounting Polici15

Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2016
Accounting Policies [Abstract]
Summary of Stock Based Compensation Included in Cost of Sales or Operating Expenses	Stock-based compensation is included in cost of sales or operating expenses, as applicable, and consists of the following: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Cost of product revenue $ 241 $ 241 $ 632 $ 647 Research and development expenses 184 181 472 544 Sales and marketing expenses 314 288 852 774 General and administrative expenses 735 766 2,321 2,210 Total stock-based compensation $ 1,474 $ 1,476 $ 4,277 $ 4,175
Schedule of Total Revenues, Based on Shipment Destination or Research Services Location	Information about the Company’s total revenues, based on shipment destination or services location, is presented in the following table: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands) Revenue: U.S. $ 6,850 $ 12,088 $ 28,471 $ 33,810 International 22,710 19,451 61,628 51,324 Total $ 29,560 $ 31,539 $ 90,099 $ 85,134

Inventories (Tables)

Inventories (Tables)	9 Months Ended
	Sep. 30, 2016
Inventory Disclosure [Abstract]
Schedule of Inventories	Inventories consist of the following: September 30, December 31, (In thousands) Raw materials $ 3,862 $ 4,432 Finished goods 9,040 2,100 Total $ 12,902 $ 6,532

Property, Plant and Equipment17

Property, Plant and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2016
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	Property, plant and equipment consist of the following: September 30, December 31, Useful life (In thousands) Construction in progress $ 10,830 $ 5,138 — Buildings 23,901 23,884 30 years Machinery and equipment 109,156 104,658 3-10 years Computer equipment and software 7,472 6,888 3 years Total 151,359 140,568 Accumulated depreciation (69,454 ) (62,246 ) Property, plant and equipment, net $ 81,905 $ 78,322

Accrued Expenses (Tables)

Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2016
Payables and Accruals [Abstract]
Schedule of Accrued Expenses	Accrued expenses consist of the following: September 30, December 31, (In thousands) Employee compensation $ 2,452 $ 4,184 Other accrued expenses 1,693 1,384 Total $ 4,145 $ 5,568

Commitments and Contingencies (

Commitments and Contingencies (Tables)	9 Months Ended
	Sep. 30, 2016
Commitments and Contingencies Disclosure [Abstract]
Summary of ARO Activity	Nine Months Ended 2016 (In thousands) Balance at beginning of period $ 397 Expenditures (156 ) Settlement of asset retirement obligation (241 ) Balance at end of period $ —

Net Loss Per Share (Tables)

Net Loss Per Share (Tables)	9 Months Ended
	Sep. 30, 2016
Earnings Per Share [Abstract]
Computation of Basic and Diluted Net Loss Per Share	The computation of basic and diluted net loss per share consists of the following: Three Months Ended Nine Months Ended 2016 2015 2016 2015 (In thousands, except share and per share data) Numerator: Net loss $ (3,097 ) $ (2,522 ) $ (6,281 ) $ (8,055 ) Denominator: Weighted average shares outstanding, basic and diluted 23,168,251 23,060,456 23,114,280 23,017,822 Net loss per share, basic and diluted $ (0.13 ) $ (0.11 ) $ (0.27 ) $ (0.35 )
Summary of Potentially Dilutive Common Shares Excluded from Computation of Diluted Net Loss Per Share	Potentially dilutive common shares that were excluded from the computation of diluted net loss per share because they were anti-dilutive consist of the following: Three Months Ended Nine Months Ended 2016 2015 2016 2015 Common stock options 2,044,840 1,224,279 2,044,840 1,224,279 Restricted common stock units 677,001 405,463 677,001 405,463 Common stock warrants 115 131 115 131 Restricted common stock awards 153,277 54,005 153,277 54,005 Total 2,875,233 1,683,878 2,875,233 1,683,878

Description of Business and B21

Description of Business and Basis of Presentation - Additional Information (Detail)	9 Months Ended
	Sep. 30, 2016Subsidiary
Basis Of Presentation [Line Items]
Number of Subsidiaries	3
Aspen Aerogels Georgia, LLC [Member]
Basis Of Presentation [Line Items]
Date of incorporation	2016-08

Significant Accounting Polici22

Significant Accounting Policies - Additional Information (Detail) $ in Millions	Jan. 01, 2016shares	Sep. 30, 2016USD ($)Customershares	Sep. 30, 2015Customer	Sep. 30, 2016USD ($)CustomerSegmentshares	Sep. 30, 2015Customer	Dec. 31, 2015Customer
Summary Of Significant Accounting Policies [Line Items]
Number of segment | Segment				1
Warranty expense | $				$ 0.5
Total Revenue [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer		3	3	2	2
Accounts Receivable [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of customers | Customer				2		3
Customer One [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		32.00%	13.00%	20.00%	15.00%
Customer One [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				30.00%		17.00%
Customer Two [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		13.00%	12.00%	14.00%	15.00%
Customer Two [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage				15.00%		14.00%
Customers Three [Member] | Total Revenue [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage		10.00%	11.00%
Customers Three [Member] | Accounts Receivable [Member] | Customer Concentration Risk [Member]
Summary Of Significant Accounting Policies [Line Items]
Concentration risk, percentage						13.00%
2014 Equity Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Authorized number of shares increased by	463,697
Increased number of shares available for grant	6,069,201	2,845,219		2,845,219
Shares reserved for issuance		2,628,813		2,628,813
2014 Equity Plan [Member] | Non-Employee Directors [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based award vesting period				1 year
2014 Equity Plan [Member] | Restricted Stock Units [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based awards granted				420,284
Stock-based award vesting period				3 years
2014 Equity Plan [Member] | Non-Qualified Stock Options [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based awards granted to purchase common stock				259,469
Stock-based award vesting period				3 years
2014 Equity Plan [Member] | Non-Qualified Stock Options [Member] | Non-Employee Directors [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based awards granted to purchase common stock				103,593
Stock-based award fair value | $		$ 0.2		$ 0.2
2014 Equity Plan [Member] | Restricted Common Stock [Member] | Non-Employee Directors [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock-based awards granted				75,152
Stock-based award fair value | $		$ 0.4		$ 0.4
2001 Equity Incentive Plan [Member]
Summary Of Significant Accounting Policies [Line Items]
Shares reserved for issuance		93,014		93,014

Significant Accounting Polici23

Significant Accounting Policies - Summary of Stock Based Compensation Included in Cost of Sales or Operating Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	$ 1,474	$ 1,476	$ 4,277	$ 4,175
Cost of Product Revenue [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	241	241	632	647
Research and Development Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	184	181	472	544
Sales and Marketing Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	314	288	852	774
General and Administrative Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Total stock-based compensation	$ 735	$ 766	$ 2,321	$ 2,210

Significant Accounting Polici24

Significant Accounting Policies - Schedule of Total Revenues, Based on Shipment Destination or Research Services Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Revenue	$ 29,560	$ 31,539	$ 90,099	$ 85,134
U.S. [Member]
Segment Reporting Information [Line Items]
Revenue	6,850	12,088	28,471	33,810
International [Member]
Segment Reporting Information [Line Items]
Revenue	$ 22,710	$ 19,451	$ 61,628	$ 51,324

Inventories - Schedule of Inven

Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 3,862	$ 4,432
Finished goods	9,040	2,100
Total	$ 12,902	$ 6,532

Property, Plant and Equipment26

Property, Plant and Equipment, Net - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 151,359	$ 140,568
Accumulated depreciation	(69,454)	(62,246)
Property, plant and equipment, net	81,905	78,322
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 23,901	23,884
Property, plant and equipment, Useful life	30 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 109,156	104,658
Computer Equipment and Software [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 7,472	6,888
Property, plant and equipment, Useful life	3 years
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 10,830	$ 5,138
Minimum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	3 years
Maximum [Member] | Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Useful life	10 years

Property, Plant and Equipment27

Property, Plant and Equipment, Net - Additional Information (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 7,300	$ 7,400
Property, plant and equipment, gross	151,359		$ 140,568
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	10,830		5,138
Statesboro, Georgia [Member] | Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 6,300		$ 2,300

Accrued Expenses - Schedule of

Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Accrued Liabilities, Current [Abstract]
Employee compensation	$ 2,452	$ 4,184
Other accrued expenses	1,693	1,384
Total	$ 4,145	$ 5,568

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail)	Jun. 29, 2016USD ($)ft²	Sep. 30, 2016USD ($)ft²Installment	Dec. 31, 2015USD ($)
Commitments And Contingencies [Line Items]
Postponed financing costs net		$ 600,000
Number of square feet for lease | ft²		31,577
Expenditures		$ 241,000
ARO reserve reclassified to accrued expenses		200,000
Leasehold improvement costs capitalized		$ 400,000
Cabot II- MA1M03, LLC [Member] | New Lease Agreement [Member]
Commitments And Contingencies [Line Items]
Number of square feet for lease | ft²	51,650
Lease commence date	Jan. 1, 2017
Lease end date	Dec. 31, 2026
Lease annual base rent	$ 408,000
Lease increased percentage	3.00%
Lease extended term	3 years
Amount receivables as an aid to construction of improvements of the leased premise	$ 1,200,000
Supply and Joint Development Agreement [Member] | BASF [Member]
Commitments And Contingencies [Line Items]
Supply agreement termination date		Dec. 31, 2027
Non-interest bearing prepayment, aggregate amount		$ 22,000,000
Number of quarterly installments | Installment		8
Supply and Joint Development Agreement [Member] | BASF [Member] | Maximum [Member]
Commitments And Contingencies [Line Items]
Credit limit percentage on prepayment balance		25.30%
Supply and Joint Development Agreement [Member] | BASF [Member] | Third Party Lender [Member] | Minimum [Member] | Plant Two [Member]
Commitments And Contingencies [Line Items]
Secured debt, commitment		$ 30,000,000
Silicon Valley Bank Credit Facility [Member] | Revolving Credit Facility [Member]
Commitments And Contingencies [Line Items]
Line of credit agreement, extended maturity date		Nov. 29, 2016
Maximum increased borrowing amount		$ 20,000,000
Percentage of unused revolving line facility fee		0.50%
Interest rate description		The interest rate applicable to borrowings under the revolving credit facility may be based on the prime rate or LIBOR. Prime rate-based rates vary from prime rate plus 0.75% per annum to prime rate plus 1.75% per annum, while LIBOR-based rates vary from LIBOR plus 3.75% per annum to LIBOR plus 4.25% per annum.
Line of credit facility amount withdrawn		$ 0	$ 0
Letters of credit outstanding		2,500,000	$ 2,700,000
Line of credit facility borrowing capacity		$ 12,500,000
Silicon Valley Bank Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member] | Prime Rate [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		1.75%
Silicon Valley Bank Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member] | LIBOR Rate [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		4.25%
Silicon Valley Bank Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Prime Rate [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		0.75%
Silicon Valley Bank Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member] | LIBOR Rate [Member]
Commitments And Contingencies [Line Items]
Additional interest rate per annum		3.75%

Commitments and Contingencies30

Commitments and Contingencies - Summary of ARO Activity (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
Balance at beginning of period	$ 397
Expenditures	(156)
Settlement of asset retirement obligation	(241)
Balance at end of period	$ 0

Net Loss Per Share - Computatio

Net Loss Per Share - Computation of Basic and Diluted Net Loss Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Numerator:
Net loss	$ (3,097)	$ (2,522)	$ (6,281)	$ (8,055)
Denominator:
Weighted average shares outstanding, basic and diluted	23,168,251	23,060,456	23,114,280	23,017,822
Net loss per share, basic and diluted	$ (0.13)	$ (0.11)	$ (0.27)	$ (0.35)

Net Loss Per Share - Summary of

Net Loss Per Share - Summary of Potentially Dilutive Common Shares Excluded from Computation of Diluted Net Loss Per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive Securities	2,875,233	1,683,878	2,875,233	1,683,878
Common Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive Securities	2,044,840	1,224,279	2,044,840	1,224,279
Restricted Common Stock Units [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive Securities	677,001	405,463	677,001	405,463
Common Stock Warrants [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive Securities	115	131	115	131
Restricted Common Stock Awards [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Anti-dilutive Securities	153,277	54,005	153,277	54,005