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Debt - Additional Information (Detail) |  |  |  |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |  |  |
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Sep. 30, 2020 USD ($) | Jun. 12, 2020 USD ($) | Nov. 01, 2019 | Aug. 09, 2019 USD ($) | Feb. 09, 2019 | Nov. 01, 2018 USD ($) $ / shares | Jul. 26, 2018 USD ($) | Nov. 07, 2017 USD ($) | Jun. 30, 2020 USD ($) $ / shares shares | Aug. 31, 2019 USD ($) $ / shares | Jul. 31, 2018 USD ($) | Aug. 31, 2017 USD ($) | Jan. 31, 2016 USD ($) | Jun. 30, 2014 USD ($) $ / shares | Jul. 31, 2013 USD ($) $ / shares | Jun. 30, 2020 USD ($) $ / shares shares | Jun. 30, 2019 USD ($) | Jun. 30, 2017 USD ($) shares | Mar. 31, 2017 USD ($) shares | Jun. 30, 2020 USD ($) $ / shares shares | Jun. 30, 2019 USD ($) | Dec. 31, 2016 USD ($) | Jun. 29, 2020 shares | Dec. 31, 2019 USD ($) $ / shares shares | Aug. 01, 2018 USD ($) | Jun. 14, 2018 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  | $ 0.001 |  |  |  | $ 0.001 |  |  |  | $ 0.001 |  |
Common stock, shares outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  | 4,239,578 |  |  |  |  |  |  | 4,239,578 |  |  |  | 4,239,578 |  |  | 42,395,782 | 3,521,037 |  |
Unrealized loss (gain) on fair value adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (7,727,000) | $ (106,000) |  |  | $ (52,000) | $ (2,529,000) |  |  |  |  |
Payment-in-kind interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,277,000 | 0 |  |  |  |  |
Value of debt outstanding |  |  |  |  |  |  |  |  |  | $ 42,257,000 |  |  |  |  |  |  | 42,257,000 |  |  |  | 42,257,000 |  |  |  | $ 52,658,000 |  |
Conversion of convertible senior notes | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9,473,000 |  |  |  |  |  |  |  |  |  |
Amortization of debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,388,000 | 0 |  |  |  |  |
Debt issuance cost |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,300,000
Current portion of long term debt |  |  |  |  |  |  |  |  |  | 1,772,000 |  |  |  |  |  |  | 1,772,000 |  |  |  | 1,772,000 |  |  |  | 1,905,000 |  |
Non-current portion of long term debt |  |  |  |  |  |  |  |  |  | 174,164,000 |  |  |  |  |  |  | 174,164,000 |  |  |  | $ 174,164,000 |  |  |  | $ 174,962,000 |  |
Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of convertible senior notes | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  |  |  |  |  |  |  |  |
Additional Paid-in Capital |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of convertible senior notes | [1] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9,472,000 |  |  |  |  |  |  |  |  |  |
4.25% Convertible Senior Notes (due 2018) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | $ 8,000,000.0 |  |  |  |  | $ 21,600,000 |  |  | $ 100,000,000.0 |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 4.25% |  |  | 4.25% |  |  |  |  |  |  |  |  |  |  |
Conversion rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 114.3674 |  |  |  |  |  |  |  |  |  |  |
Gain recognized on retirement of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,000 |  |  | $ 100,000 |  |  |  |  |  |  |  |
Debt instrument, conversion rate (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 8.74 |  |  |  |  |  |  |  |  |  |  |
Debt instrument repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000.0 | $ 39,100,000 |  |  | $ 6,100,000 |  |  |  |
Write-off of debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  | $ 100,000 |  |  |  |
Payment for repurchase of convertible notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 24,100,000 |  |  |  |  |  |  |
Debt instrument shares common stock issued upon conversion (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 290,000 |  |  |  |  |  |  |
Interest rate if paid in cash |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate if paid in stock |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Paid in kind interest rate |  |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt converted, amount |  |  |  |  |  |  |  |  |  |  |  | $ 8,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
4.25% Convertible Senior Notes (due 2018) | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 11,600,000 |  |  |  |  |  |  |  |
Debt instrument shares common stock issued upon conversion (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 11,240 |  |  |  |  |  |  |  |
3.25% Convertible Senior Notes (due 2020) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  | $ 8,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  | 3.25% |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion price, percentage |  |  |  | 105.00% |  |  | 105.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment-in-kind interest |  |  |  |  |  |  |  |  |  | 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt converted, amount |  |  |  |  |  |  |  |  |  | $ 7,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
3.25% Convertible Senior Notes (due 2020) | Common Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument shares common stock issued upon conversion (in shares) | shares |  |  |  |  |  |  |  |  |  | 710,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of convertible senior notes |  |  |  |  |  |  |  |  |  | $ 9,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
4.875% convertible senior notes due 2020 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 113,000,000.0 |  |  |  | $ 115,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  | 4.875% |  |  |  |  | 4.875% |  | 4.875% |  |  |  | 4.875% |  |  |  | 4.875% |  |
Conversion rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 103.7613 |  |  |  |  |  |  |  |  |  |  |  |
Gain recognized on retirement of debt |  |  |  |  | $ (2,400,000) |  |  |  |  |  |  |  |  | $ 100,000 | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, conversion rate (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 9.64 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument repurchase amount |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |
Write-off of debt issuance costs |  |  |  |  | 700,000 |  |  |  |  |  |  |  |  | $ 100,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Value of debt outstanding |  |  |  |  |  |  |  |  |  | $ 0 | 111,100,000 |  |  |  |  |  | $ 0 |  |  |  | $ 0 |  |  |  | $ 1,905,000 |  |
Debt refinanced, exchanged into similar debt instruments |  |  |  |  |  |  |  |  |  |  | 103,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of accrued interest refinanced |  |  |  |  |  |  |  |  |  |  | 1,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amount of debt exchanged into a new debt instrument |  |  |  |  |  |  |  |  |  |  | $ 7,300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible senior notes, net of debt issuance costs |  |  |  |  |  |  |  |  |  | $ 1,900,000 |  |  |  |  |  |  | $ 1,900,000 |  |  |  | $ 1,900,000 |  |  |  |  |  |
Convertible senior note payable, fair value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,700,000 |  |
3.25% convertible senior notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  | 3.25% |  |  | 3.25% |  |  |  | 3.25% |  |  |  | 3.25% |  |  |  | 3.25% |  |
Conversion rate |  |  |  |  |  | 1.00 |  |  |  |  | 1.00 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument shares common stock issued upon conversion (in shares) | shares |  |  |  |  |  |  |  |  |  | 710,100 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt conversion price, percentage |  |  |  |  |  |  |  |  |  |  | 105.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate if paid in cash |  |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  | 3.25% |  |  |  | 3.25% |  |  |  |  |  |
Interest rate if paid in stock |  |  |  |  |  |  |  |  |  | 5.00% |  |  |  |  |  |  | 5.00% |  |  |  | 5.00% |  |  |  |  |  |
Paid in kind interest rate |  |  |  |  |  |  |  |  |  | 2.75% |  |  |  |  |  |  | 2.75% |  |  |  | 2.75% |  |  |  |  |  |
Threshold percentage of stock price trigger |  |  |  |  |  |  |  |  |  |  | 30.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Threshold percentage of market price trigger |  |  |  |  |  |  |  |  |  |  | 150.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  |  |  |  |  | 49.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payment-in-kind interest |  |  |  |  |  |  |  |  |  | $ 200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of debt outstanding |  |  |  |  |  |  |  |  |  | 42,257,000 |  |  |  |  |  |  | $ 42,257,000 |  |  |  | $ 42,257,000 |  |  |  | $ 50,753,000 |  |
Debt converted, amount |  |  |  |  |  |  |  |  |  | 7,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of convertible senior notes |  |  |  |  |  |  |  |  |  | 9,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Convertible Senior Notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization of debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | $ 200,000 |  |  | 0 | $ 400,000 |  |  |  |  |
Paycheck Protection Program Loan | Unsecured debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  | $ 6,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Monthly payments |  |  | $ 261,275 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current portion of long term debt |  |  |  |  |  |  |  |  |  | 1,800,000 |  |  |  |  |  |  | 1,800,000 |  |  |  | 1,800,000 |  |  |  |  |  |
Non-current portion of long term debt |  |  |  |  |  |  |  |  |  | 4,400,000 |  |  |  |  |  |  | 4,400,000 |  |  |  | 4,400,000 |  |  |  |  |  |
Oasis Management and Oasis Investments ll Master Fund Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oasis Management and Oasis Investments ll Master Fund Ltd. | 3.25% Convertible Senior Notes (due 2020) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  |  |  | $ 21,600,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  |  |  |  | 3.25% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion rate |  |  |  |  |  |  | 393.7008 | 322.2688 |  |  |  |  | 328.0302 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain recognized on retirement of debt |  |  |  |  |  |  | $ 1,000 | $ (500,000) | $ (600,000) |  | $ (10,400,000) |  | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, conversion rate (in dollars per share) | $ / shares |  |  |  |  |  |  | $ 2.54 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, amount redeemed |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 13,200,000 |
Unrealized loss (gain) on fair value adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (7,700,000) |  |  |  |  |  |  |  |  |  |
Payment-in-kind interest |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  |  |  |  |  |  |  |
Oasis Management and Oasis Investments ll Master Fund Ltd. | 3.25% convertible senior notes due 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  |  |  |  |  |  | $ 8,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Secured Debt | New Term Loan Agreement |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate |  |  |  |  |  |  |  |  |  |  | 10.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate if paid in cash |  |  |  |  |  |  |  |  |  |  | 8.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Paid in kind interest rate |  |  |  |  |  |  |  |  |  |  | 2.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Value of debt outstanding |  |  |  |  |  |  |  |  |  | 134,801,000 |  |  |  |  |  |  | 134,801,000 |  |  |  | 134,801,000 |  |  |  | 134,801,000 |  |
Amortization of debt discount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700,000 |  |  |  | 1,400,000 |  |  |  |  |  |
Line of credit facility maximum borrowing capacity |  |  |  |  |  |  |  |  |  |  | $ 134,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance cost |  |  |  |  | 3,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Amortization expense debt issuance |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000 |  |  |  | 500,000 |  |  |  |  |  |
Debt discount |  |  |  |  | $ 10,100,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long term debt |  |  |  |  |  |  |  |  |  | $ 126,800,000 |  |  |  |  |  |  | $ 126,800,000 |  |  |  | $ 126,800,000 |  |  |  | $ 123,400,000 |  |
Secured Debt | New Term Loan Agreement | Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Covenant, EBITDA requirement |  | $ 34,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum liquidity requirement |  | $ 10,000,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.

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