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Subsequent Events - Additional Information (Detail) |  |  |  |  |  | 12 Months Ended |
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Mar. 16, 2017 $ / shares | Mar. 01, 2017 shares | Feb. 17, 2017 USD ($) | Jan. 06, 2017 USD ($) | Sep. 14, 2016 $ / shares | Dec. 31, 2016 USD ($) shares | Dec. 31, 2015 USD ($) shares | Sep. 30, 2016 shares
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Common stock, shares authorized | shares |  |  |  |  |  | 140,000,000 | 110,000,000 | 700,000,000
Cash received from property, plant and equipment |  |  |  |  |  | $ 17,000 | $ 82,000 |
Gain (loss) on property, plant and equipment |  |  |  |  |  | $ (600,000) |  |
Subsequent Event |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Stock split of common stock |  | 0.2 |  |  |  |  |  |
Common stock, shares authorized | shares |  | 140,000,000 |  |  |  |  |  |
Minimum closing bid price of common stock | $ / shares | $ 1.00 |  |  |  |  |  |  |
Subsequent Event | Land, Buildings and Improvements | California |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Amount of divestiture of long-lived |  |  |  | $ 17,300,000 |  |  |  |
Cash received from property, plant and equipment |  |  | $ 17,300,000 |  |  |  |  |
Net cash received from property, plant and equipment |  |  |  | 16,700,000 |  |  |  |
Payments for commissions and other fees |  |  |  | 624,000 |  |  |  |
Gain (loss) on property, plant and equipment |  |  |  | $ (564,000) |  |  |  |
NASDAQ |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |
Bid price of common stock, closing price | $ / shares |  |  |  |  | $ 1.00 |  |  |
Bid price of common stock, period less than required closing bid price |  |  |  |  | 30 years |  |  |
Bid price of common stock, period provided to regain compliance |  |  |  |  | 180 years |  |  |
Bid price of common stock, date provided to regain compliance |  |  |  |  | Mar. 13, 2017 |  |  |

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- Definition Closing Bid Price of Common Stock, Period Below Required Price per Share + References No definition available. + Details
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- Definition Closing Bid Price of Common Stock, Period Provided to Regain Required Price per Share + References No definition available. + Details
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- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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