Quarterly report pursuant to Section 13 or 15(d)

Notices of Delisting or Failure to Satisfy a Continued Listing Rule or Standard (Details)

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Notices of Delisting or Failure to Satisfy a Continued Listing Rule or Standard (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Jun. 30, 2018
Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard        
Entity Listing, Description On October 16, 2019, the Company received notice from NYSE American LLC ("NYSE American" or the "Exchange") that the Company currently is below the Exchange's continued listing standards set forth in Section 1003(a)(iii) of the Guide, which applies if a listed company has stockholders' equity of less than $6,000,000 and has reported losses from continuing operations and/or net losses in its five most recent fiscal years.      
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest $ (1,940) $ 2,457 $ 13,028 $ 16,164