Subsequent Events	3 Months Ended
Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	22. Subsequent Events In April 2019, certain noteholders converted an aggregate outstanding principal balance of $9.2 million of their 5.75% Convertible Notes into approximately 0.5 million shares of the Company’s common stock. Pursuant to the Indenture, the Company also made Conversion Make-Whole Payments of approximately 1.4 million shares of the Company’s common stock to those converting noteholders. As of April 30, 2019, there were 10,268,718 shares of the Company’s common stock outstanding. As previously disclosed, on November 27, 2018, the Company received a written notice from Nasdaq that the Company’s common stock would be delisted from the Nasdaq Global Select Market, due to lack of compliance with Nasdaq Listing Rule 5450(a)(1) (the “Minimum Bid Price Rule”). Also on November 27, 2018, the Company received written notice from the Listing Qualifications Department of Nasdaq notifying the Company that the Staff of Nasdaq has determined that the Company did not meet the minimum market value of publicly held shares requirement set forth in Nasdaq Listing Rule 5450(b)(3)(c) (the “Minimum Market Value Rule”) as of such date. In accordance with Nasdaq’s procedures, the Company appealed the Nasdaq’s determination by requesting a hearing (the “Hearing”) before a Nasdaq Hearings Panel (the “Panel”) to seek continued listing, which stated the delisting of the Company’s common stock. On January 15, 2019, the Panel granted the Company’s request for continued listing of the Company’s common stock on The Nasdaq Global Select Market pursuant to an extension through May 27, 2019, subject to the condition that the Company regain compliance with its Nasdaq listing rules by such date and provide the Panel with certain interim progress reports. On April 18, 2019, the Nasdaq informed the Company it has regained compliance with the Minimum Bid Price Rule and it has indicated that this matter relating to the Minimum Bid Price Rule is now closed. The Company remains in a grace period for non-compliance with the Minimum Market Value Rule until May 29, 2019.

Subsequent Events

3 Months Ended

Mar. 31, 2019

22. Subsequent Events

In April 2019, certain noteholders converted an aggregate outstanding principal balance of $9.2 million of their 5.75% Convertible Notes into approximately 0.5 million shares of the Company’s common stock. Pursuant to the Indenture, the Company also made Conversion Make-Whole Payments of approximately 1.4 million shares of the Company’s common stock to those converting noteholders.

As of April 30, 2019, there were 10,268,718 shares of the Company’s common stock outstanding.

As previously disclosed, on November 27, 2018, the Company received a written notice from Nasdaq that the Company’s common stock would be delisted from the Nasdaq Global Select Market, due to lack of compliance with Nasdaq Listing Rule 5450(a)(1) (the “Minimum Bid Price Rule”). Also on November 27, 2018, the Company received written notice from the Listing Qualifications Department of Nasdaq notifying the Company that the Staff of Nasdaq has determined that the Company did not meet the minimum market value of publicly held shares requirement set forth in Nasdaq Listing Rule 5450(b)(3)(c) (the “Minimum Market Value Rule”) as of such date. In accordance with Nasdaq’s procedures, the Company appealed the Nasdaq’s determination by requesting a hearing (the “Hearing”) before a Nasdaq Hearings Panel (the “Panel”) to seek continued listing, which stated the delisting of the Company’s common stock. On January 15, 2019, the Panel granted the Company’s request for continued listing of the Company’s common stock on The Nasdaq Global Select Market pursuant to an extension through May 27, 2019, subject to the condition that the Company regain compliance with its Nasdaq listing rules by such date and provide the Panel with certain interim progress reports. On April 18, 2019, the Nasdaq informed the Company it has regained compliance with the Minimum Bid Price Rule and it has indicated that this matter relating to the Minimum Bid Price Rule is now closed. The Company remains in a grace period for non-compliance with the Minimum Market Value Rule until May 29, 2019.