Commitments and Contingencies	6 Months Ended
Jun. 30, 2019
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	11. COMMITMENTS AND CONTINGENCIES Commitments – We currently have no aircraft purchase commitments. Environmental Matters – We have recorded an estimated liability of $0.15 million as of June 30, 2019 for environmental response costs. Previously, we conducted environmental surveys of our former Lafayette Facility located at the Lafayette Regional Airport, which we vacated in 2001, and determined that limited soil and groundwater contamination exist at two parcels of land at the former facility. An Assessment Report for both parcels was submitted in 2003 (and updated in 2006) to the Louisiana Department of Environmental Quality ("LDEQ") and the Louisiana Department of Natural Resources ("LDNR"). Approvals for the Assessment Report were received from the LDEQ and LDNR in 2010 and 2011, respectively. Since that time, we have performed groundwater sampling of the required groundwater monitor well installations at both parcels and submitted these sampling reports to the LDEQ. Pursuant to an agreement with the LDEQ, we provided groundwater sample results semi-annually to the LDEQ for both parcels from 2005 to 2015. The LDEQ approved a reduction in the sampling program from semi-annual to annual groundwater monitoring in 2015. Based on our working relationship and agreements with the LDEQ, and the results of ongoing former facility parcel monitoring, we believe that ultimate remediation costs for the subject parcels will not be material to our consolidated financial position, operations or cash flows. Legal Matters – From time to time, we are involved in various legal actions incidental to our business, including actions relating to employee claims, medical malpractice claims, tax issues, grievance hearings before labor regulatory agencies, and miscellaneous third party tort actions. The outcome of these proceedings is not predictable. However, based on current circumstances, we do not believe that the ultimate resolution of our presently pending proceedings, after considering available defenses and any insurance coverage or indemnification rights, will have a material adverse effect on our financial position, results of operations or cash flows. Notwithstanding the foregoing, any litigation pending against us or any of the Debtors as of the Petition Date and any claims that could be asserted against us or an of the Debtors that arose prior to the Petition Date are automatically stayed as a result of the commencement of the Chapter 11 Cases pursuant to the section 362(2) of the Bankruptcy Code, subject to certain statutory exceptions. These matters will be subject to resolution in accordance with the Bankruptcy Code and applicable orders of the Bankruptcy Court.

Commitments and Contingencies

6 Months Ended

Jun. 30, 2019

Commitments And Contingencies Disclosure [Abstract]

11. COMMITMENTS AND CONTINGENCIES

Commitments – We currently have no aircraft purchase commitments.

Environmental Matters – We have recorded an estimated liability of $0.15 million as of June 30, 2019 for environmental response costs. Previously, we conducted environmental surveys of our former Lafayette Facility located at the Lafayette Regional Airport, which we vacated in 2001, and determined that limited soil and groundwater contamination exist at two parcels of land at the former facility. An Assessment Report for both parcels was submitted in 2003 (and updated in 2006) to the Louisiana Department of Environmental Quality ("LDEQ") and the Louisiana Department of Natural Resources ("LDNR"). Approvals for the Assessment Report were received from the LDEQ and LDNR in 2010 and 2011, respectively. Since that time, we have performed groundwater sampling of the required groundwater monitor well installations at both parcels and submitted these sampling reports to the LDEQ. Pursuant to an agreement with the LDEQ, we provided groundwater sample results semi-annually to the LDEQ for both parcels from 2005 to 2015. The LDEQ approved a reduction in the sampling program from semi-annual to annual groundwater monitoring in 2015. Based on our working relationship and agreements with the LDEQ, and the results of ongoing former facility parcel monitoring, we believe that ultimate remediation costs for the subject parcels will not be material to our consolidated financial position, operations or cash flows.

Legal Matters – From time to time, we are involved in various legal actions incidental to our business, including actions relating to employee claims, medical malpractice claims, tax issues, grievance hearings before labor regulatory agencies, and miscellaneous third party tort actions. The outcome of these proceedings is not predictable. However, based on current circumstances, we do not believe that the ultimate resolution of our presently pending proceedings, after considering available defenses and any insurance coverage or indemnification rights, will have a material adverse effect on our financial position, results of operations or cash flows.

Notwithstanding the foregoing, any litigation pending against us or any of the Debtors as of the Petition Date and any claims that could be asserted against us or an of the Debtors that arose prior to the Petition Date are automatically stayed as a result of the commencement of the Chapter 11 Cases pursuant to the section 362(2) of the Bankruptcy Code, subject to certain statutory exceptions. These matters will be subject to resolution in accordance with the Bankruptcy Code and applicable orders of the Bankruptcy Court.