Long-Term Debt - Additional Information (Detail) | Dec. 20, 2016USD ($) | Oct. 24, 2016USD ($) | Jul. 28, 2016LetterAgreement | Feb. 29, 2016USD ($)$ / shares | Feb. 22, 2016USD ($)$ / sharesshares | Mar. 12, 2014USD ($) | Oct. 31, 2010USD ($)Note | Dec. 31, 2010USD ($) | Mar. 31, 2016USD ($) | Dec. 31, 2016USD ($)$ / shares | Jun. 30, 2016USD ($) | Sep. 30, 2015USD ($) |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Repayment premium on unpaid principle amount of loans | | | | | | | | | | 10.00% | | |
Percentage of repayment of debt from proceeds on sale of assets and casualty events | | | | | | | | | | 100.00% | | |
Gain on extinguishment of debt | | | | | | | | | $ 2,900,000 | | | |
Proceeds from the issuance of note | | | | | | | | | | $ 15,000,000 | | |
Aggregate initial principal amount of debt | | | | | | | | | | 127,282,000 | $ 105,760,000 | |
Mortgage loans, amount | | | | | | | | | | 126,105,000 | 105,114,000 | |
Chairman and Chief Executive Officer [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Current portion of long-term debt | | | | | | | | | | | | $ 600,000 |
First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Required to maintain a cash balance under financial covenants | | | | | | | | | | 5,000,000 | | |
Debt service reserve account | | | | | | | | | | 2,400,000 | | |
Minimum balance in debt service reserve account | | | | | | | | | | $ 1,600,000 | | |
Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Royalty percentage on first $50 million of net sales | | | | | | | | | | 4.52% | | |
Royalty percentage on second $50 million of net sales | | | | | | | | | | 1.75% | | |
Royalty percentage on net sales in excess of $100 million | | | | | | | | | | 0.438% | | |
Agreement buy-out date | | | | | | | | | | Mar. 12, 2018 | | |
Agreement buy-out increases date, Description | | | | | | | | | | On March 13, 2017, the buy-out amount increases to approximately $33.5 million, and on March 13, 2018, the buy-out amount increases up to a maximum of approximately $37.2 million. | | |
Agreement, commencement date | | | | | | | | | | Mar. 12, 2014 | | |
Agreement, expiration date | | | | | | | | | | Mar. 12, 2024 | | |
Senior Secured Convertible Notes [Member] | Counterparty [Member] | Conversion Rate Floor Price [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Debt instrument convertible, conversion price | $ / shares | | | | $ 12.50 | | | | | | | | |
Mortgage Loan [Member] | First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Number of mortgage loans | Note | | | | | | | 2 | | | | | |
Maximum [Member] | Chairman and Chief Executive Officer [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Repayments of loan | | | | $ 100,000 | | | | | | | | |
Credit Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Committed principal amount of term loan | | | | | | $ 70,000,000 | | | | | | |
Warrants to repurchase common stock | shares | | | | | 1,673,981 | | | | | | | |
Exercise price of warrants | $ / shares | | | | | $ 12.50 | | | | | | | |
Credit Agreement [Member] | Minimum [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Required to maintain a cash balance under financial covenants | | | | | | $ 3,000,000 | | | | | | |
10.25% Term Loan, Due March 2020 [Member] | Term Loan [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Interest rate per annum | | | | | | | | | | 9.25% | | |
Additional interest rate on LIBOR | | | | | | | | | | 1.00% | | |
Term loan, interest rate terms | | | | | | | | | | The Loans bear interest at 9.25% per annum plus the greater of three-month LIBOR or 1.0%. | | |
Interest payable description | | | | | | | | | | January 1, 2016 through February 22, 2018 | | |
Term loan, default interest rate, fixed percentage | | | | | | | | | | 14.25% | | |
Term loan, default interest rate, variable percentage | | | | | | | | | | 1.00% | | |
Term loan ,default interest rate terms | | | | | | | | | | A default interest rate of 14.25% per annum plus the greater of three-month LIBOR or 1.0% | | |
Term loan maturity date | | | | | | | | | | Mar. 12, 2020 | | |
Long-term debt, percentage | | | | | | | | | | 10.25% | | |
Aggregate initial principal amount of debt | | | | | | | | | | $ 64,303,000 | 57,227,000 | |
Amended Credit Agreement [Member] | Maximum [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Repayment premium on unpaid principle amount of loans | | | | | | 10.00% | | | | | | |
Eighth Amendment to Credit Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Warrants to repurchase common stock | shares | | | | | 1,673,981 | | | | | | | |
Exercise price of warrants | $ / shares | | | | | $ 12.50 | | | | | | | |
Debt, fair value | | | | | $ 51,300,000 | | | | | | | |
4.52 % [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Net sales | | | | | | | | | | 50,000,000 | | |
1.75 % [Member] | Minimum [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Net sales | | | | | | | | | | 50,000,000 | | |
1.75 % [Member] | Maximum [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Net sales | | | | | | | | | | 100,000,000 | | |
0.438 % [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Net sales | | | | | | | | | | 100,000,000 | | |
March 13, 2018 [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Increase in buy-out amount | | | | | | | | | | 37,200,000 | | |
December 31, 2016 [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Buy-out amount | | | | | | | | | | 27,700,000 | | |
March 2017 [Member] | Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Buy-out amount | | | | | | | | | | 33,500,000 | | |
Amended Royalty Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Royalty agreement liability | | | | | 7,000,000 | | | | | $ 5,500,000 | | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Counterparty [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Proceeds from the issuance of note | | | | | 30,000,000 | | | | | | | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Counterparty [Member] | 2017 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Maximum amount of notes purchased | | | | | 15,000,000 | | | | | | | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Counterparty [Member] | 2018 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Maximum amount of notes purchased | | | | | $ 10,000,000 | | | | | | | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Senior Secured Convertible Notes [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Long-term debt, percentage | | | | | | | | | | 6.00% | | |
Long-term debt, due year and month | | | | | | | | | | 2023-02 | | |
Aggregate initial principal amount of debt | | | | | | | | | | $ 43,428,000 | 29,066,000 | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Senior Secured Convertible Notes [Member] | Counterparty [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Long-term debt, percentage | | | | 6.00% | | | | | | | | |
Long-term debt, due year and month | | | | | | | | | | 2023-02 | | |
6.00% Senior Secured Convertible Note, Due February 2023 [Member] | Maximum [Member] | Senior Secured Convertible Notes [Member] | Counterparty [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Principal amount of debt | | | | $ 55,000,000 | | | | | | | | |
Counterparty Letter Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Number of letter agreements | LetterAgreement | | | 2 | | | | | | | | | |
Right to terminate conversion limit period | | | 75 days | | | | | | | | | |
Counterparty Letter Agreement [Member] | Senior Secured Convertible Notes [Member] | 2017 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Principal amount of debt | | $ 10,000,000 | | | | | | | | | | |
Proceeds from the issuance of note | | 10,000,000 | | | | | | | | | | |
Financing fee | | 600,000 | | | | | | | | | | |
Aggregate initial principal amount of debt | | $ 10,600,000 | | | | | | | | | | |
Counterparty Letter Agreement [Member] | Minimum [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Percentage of outstanding common stock conversion limit | | | 10.00% | | | | | | | | | |
December 2016 Convertible Note [Member] | Senior Secured Convertible Notes [Member] | 2017 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Principal amount of debt | $ 5,000,000 | | | | | | | | | | | |
Proceeds from the issuance of note | 5,000,000 | | | | | | | | | | | |
Aggregate initial principal amount of debt | $ 5,000,000 | | | | | | | | | | | |
Outstanding Counterparty Notes [Member] | Senior Secured Convertible Notes [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Term loan maturity date | | | | | | | | | | Feb. 22, 2023 | | |
Long-term debt, percentage | | | | | | | | | | 6.00% | | |
Principal and loan prepayment prior notice period | | | | | | | | | | 15 days | | |
Non-cash repayments relating to development and customization fees | | | | | | | | | | $ 2,300,000 | | |
Excess of other Indebtedness | | | | | | | | | | 1,000,000 | | |
Excess of adjustment, long-term debt | | | | | | | | | | $ 1,000,000 | | |
Debt instrument, redemption percentage of principal amount redeem | | | | | | | | | | 101.00% | | |
Derivative liability, market value | | | | | | | | | | $ 500,000 | | |
Outstanding Counterparty Notes [Member] | Senior Secured Convertible Notes [Member] | Collateral [Member] | Conversion Rate Floor Price [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Debt instrument convertible, conversion price | $ / shares | | | | | | | | | | $ 12.50 | | |
Outstanding Counterparty Notes [Member] | Senior Secured Convertible Notes [Member] | 2016 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Derivative liability, fair value | | | | | | | | | | $ 1,700,000 | | |
Outstanding Counterparty Notes [Member] | Senior Secured Convertible Notes [Member] | October 2016 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Derivative liability, fair value | | | | | | | | | | 100,000 | | |
Outstanding Counterparty Notes [Member] | Maximum [Member] | Senior Secured Convertible Notes [Member] | December 2016 Convertible Note [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Derivative liability, fair value | | | | | | | | | | $ 100,000 | | |
September Counterparty Letter Agreement [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Agreement, commencement date | | | | | | | | | | Sep. 29, 2016 | | |
Agreement, expiration date | | | | | | | | | | Jul. 1, 2017 | | |
Mortgage Loan 1 [Member] | First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Interest rate per annum | | | | | | | 6.00% | | | | | |
Mortgage loans, amount | | | | | | | $ 14,250,000 | | | | | |
Mortgage Loan 2 [Member] | First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Mortgage loans, amount | | | | | | | $ 3,750,000 | | | | | |
6.00% Mortgage Loans, Due October 2020 [Member] | Mortgage Loan [Member] | First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Long-term debt, due year and month | | | | | | | 2020-10 | | | | | |
6.00% Mortgage Loan, Due December 2031 [Member] | First National Bank [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Long-term debt, due year and month | | | | | | | | | | 2031-12 | | |
Amount of loans guaranteed by U.S. Department of Agriculture | | | | | | | | | | $ 8,000,000 | | |
6.00% Mortgage Loan, Due December 2031 [Member] | Mortgage Loan [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Long-term debt, percentage | | | | | | | | | | 6.00% | | |
Long-term debt, due year and month | | | | | | | | | | 2031-12 | | |
Aggregate initial principal amount of debt | | | | | | | | | | $ 12,139,000 | $ 12,370,000 | |
Keystone [Member] | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | |
Interest rate per annum | | | | | | | | 5.00% | | | | |
Long-term debt, due year and month | | | | | | | | | | 2021-01 | | |
Loan amount for financing for land and construction of current manufacturing facility | | | | | | | | $ 2,250,000 | | | | |