0000001 - Document - Cover link:presentationLink link:calculationLink link:definitionLink 9952151 - Statement - Condensed Consolidated Balance Sheets link:presentationLink link:calculationLink link:definitionLink 9952152 - Statement - Condensed Consolidated Balance Sheets (Parentheticals) link:presentationLink link:calculationLink link:definitionLink 9952153 - Statement - Condensed Consolidated Statements of Operations link:presentationLink link:calculationLink link:definitionLink 9952154 - Statement - Condensed Consolidated Statements of Cash Flows link:presentationLink link:calculationLink link:definitionLink 9952155 - Statement - Condensed Consolidated Statements of Stockholders' Equity link:presentationLink link:calculationLink link:definitionLink 9952156 - Disclosure - BASIS OF PRESENTATION link:presentationLink link:calculationLink link:definitionLink 9952157 - Disclosure - RECENT ACCOUNTING PRONOUNCEMENTS link:presentationLink link:calculationLink link:definitionLink 9952158 - Disclosure - RESTRICTED CASH link:presentationLink link:calculationLink link:definitionLink 9952159 - Disclosure - INVENTORY link:presentationLink link:calculationLink link:definitionLink 9952160 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 9952161 - Disclosure - ACCRUED LIABILITIES AND OTHER link:presentationLink link:calculationLink link:definitionLink 9952162 - Disclosure - REVENUE link:presentationLink link:calculationLink link:definitionLink 9952163 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 9952164 - Disclosure - STOCK COMPENSATION PLANS link:presentationLink link:calculationLink link:definitionLink 9952165 - Disclosure - SELF-INSURANCE link:presentationLink link:calculationLink link:definitionLink 9952166 - Disclosure - FAIR VALUE MEASUREMENTS link:presentationLink link:calculationLink link:definitionLink 9952167 - Disclosure - EQUITY METHOD INVESTMENTS link:presentationLink link:calculationLink link:definitionLink 9952168 - Disclosure - SEGMENTS OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 9952169 - Disclosure - NET INCOME (LOSS) PER SHARE link:presentationLink link:calculationLink link:definitionLink 9952170 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 9952171 - Disclosure - AT MARKET AGREEMENT AND CONFIDENTIALLY MARKETED PUBLIC OFFERING link:presentationLink link:calculationLink link:definitionLink 9955511 - Disclosure - BASIS OF PRESENTATION (Policies) link:presentationLink link:calculationLink link:definitionLink 9955512 - Disclosure - RESTRICTED CASH (Tables) link:presentationLink link:calculationLink link:definitionLink 9955513 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 9955514 - Disclosure - ACCRUED LIABILITIES AND OTHER (Tables) link:presentationLink link:calculationLink link:definitionLink 9955515 - Disclosure - REVENUE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955516 - Disclosure - STOCK COMPENSATION PLANS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955517 - Disclosure - SEGMENTS OF BUSINESS (Tables) link:presentationLink link:calculationLink link:definitionLink 9955518 - Disclosure - NET INCOME (LOSS) PER SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 9955519 - Disclosure - BASIS OF PRESENTATION (Details) link:presentationLink link:calculationLink link:definitionLink 9955520 - Disclosure - RESTRICTED CASH (Details) link:presentationLink link:calculationLink link:definitionLink 9955521 - Disclosure - INVENTORY (Details) link:presentationLink link:calculationLink link:definitionLink 9955522 - Disclosure - DEBT - KLIM Facility (Details) link:presentationLink link:calculationLink link:definitionLink 9955523 - Disclosure - DEBT - TCB Credit Facility (Details) link:presentationLink link:calculationLink link:definitionLink 9955524 - Disclosure - DEBT - PNC Credit Agreement (Details) link:presentationLink link:calculationLink link:definitionLink 9955525 - Disclosure - DEBT - Liquidity (Details) link:presentationLink link:calculationLink link:definitionLink 9955526 - Disclosure - DEBT - Fees (Details) link:presentationLink link:calculationLink link:definitionLink 9955527 - Disclosure - DEBT -Schedule of Bank Debt, Less Debt Issuance Costs (Details) link:presentationLink link:calculationLink link:definitionLink 9955528 - Disclosure - DEBT - Schedule of Future Maturities (Details) link:presentationLink link:calculationLink link:definitionLink 9955529 - Disclosure - DEBT - Covenants (Details) link:presentationLink link:calculationLink link:definitionLink 9955530 - Disclosure - DEBT - Schedule of Interest Expense (Details) link:presentationLink link:calculationLink link:definitionLink 9955531 - Disclosure - DEBT - Interest Rate Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955532 - Disclosure - ACCRUED LIABILITIES AND OTHER (Details) link:presentationLink link:calculationLink link:definitionLink 9955533 - Disclosure - REVENUE - Electric Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955534 - Disclosure - REVENUE - Coal Operations (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - REVENUE - Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955535 - Disclosure - REVENUE - Remaining Performance Obligations (Details) link:presentationLink link:calculationLink link:definitionLink 9955536 - Disclosure - REVENUE - Accounts Receivable from Contracts with Customers (Details) link:presentationLink link:calculationLink link:definitionLink 9955537 - Disclosure - REVENUE - Contract Liabilities (Details) link:presentationLink link:calculationLink link:definitionLink 9955538 - Disclosure - REVENUE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955539 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 9955540 - Disclosure - STOCK COMPENSATION PLANS - Non-vested grants and activity (Details) link:presentationLink link:calculationLink link:definitionLink 9955541 - Disclosure - STOCK COMPENSATION PLANS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955542 - Disclosure - STOCK COMPENSATION PLANS - Vesting of Non-vested RSU Grants (Details) link:presentationLink link:calculationLink link:definitionLink 9955543 - Disclosure - SELF-INSURANCE (Details) link:presentationLink link:calculationLink link:definitionLink 9955544 - Disclosure - FAIR VALUE MEASUREMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955545 - Disclosure - EQUITY METHOD INVESTMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 9955546 - Disclosure - SEGMENTS OF BUSINESS - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955547 - Disclosure - SEGMENTS OF BUSINESS - Key Metrics Reviewed (Details) link:presentationLink link:calculationLink link:definitionLink 9955548 - Disclosure - SEGMENTS OF BUSINESS - Revenue Reconciliation (Details) link:presentationLink link:calculationLink link:definitionLink 9955549 - Disclosure - SEGMENTS OF BUSINESS - Segment EBITDA (Details) link:presentationLink link:calculationLink link:definitionLink 9955550 - Disclosure - SEGMENTS OF BUSINESS - Schedule of EBITDA Margin to Income (loss) before Income Taxes (Details) link:presentationLink link:calculationLink link:definitionLink 9955551 - Disclosure - SEGMENTS OF BUSINESS - Assets And Capital Expenditure (Details) link:presentationLink link:calculationLink link:definitionLink 9955552 - Disclosure - NET INCOME (LOSS) PER SHARE - Computation of Net Income Per Share (Details) link:presentationLink link:calculationLink link:definitionLink 9955553 - Disclosure - NET INCOME PER SHARE - Narrative (Details) link:presentationLink link:calculationLink link:definitionLink 9955554 - Disclosure - COMMITMENTS AND CONTINGENCIES - Asset Purchase Agreement — Turbine Equipment (Details) link:presentationLink link:calculationLink link:definitionLink 9955555 - Disclosure - COMMITMENTS AND CONTINGENCIES - Other (Details) link:presentationLink link:calculationLink link:definitionLink 9955556 - Disclosure - AT MARKET AGREEMENT AND CONFIDENTIALLY MARKETED PUBLIC OFFERING ("CMPO") (Details) link:presentationLink link:calculationLink link:definitionLink