XML 38 R18.htm IDEA: XBRL DOCUMENT
v3.19.1

East Tennessee Materials and Energy Corporation (''M&EC'') | 3 Months Ended
--- | ---
Mar. 31, 2019
Discontinued Operations and Disposal Groups [Abstract] |
East Tennessee Materials and Energy Corporation ("M&EC") | 9. East Tennessee Materials and Energy Corporation (“M&EC”) The Company has completed the physical on-site closure and decommissioning activities at its M&EC facility (in closure status) in accordance with M&EC’s license and permit requirements, with final closure of the facility subject to completion of final surveys and regulatory approvals. At March 31, 2019, total accrued closure liabilities for our M&EC subsidiary totaled approximately $281,000 which are recorded as current liabilities. The Company recorded an additional $165,000 in closure costs and current closure liabilities due to finalization of closure requirements. The following reflects changes to the closure liabilities for the M&EC facility from year end 2018:
Amounts in thousands |  |  |
Balance as of December 31, 2018 |  | $ | 1,142 |
Adjustment to closure liability |  |  | 165 |
Spending |  |  | (1,026 | )
Balance as of March 31, 2019 |  | $ | 281 |

X
- Definition Accounting For Closure Of Facility [Text Block] + References No definition available. + Details
Name: | PESI_AccountingForClosureOfFacilityTextBlock
Namespace Prefix: | PESI_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DiscontinuedOperationsAndDisposalGroupsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration