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VARIABLE INTEREST ENTITIES - Summary of Unconsolidated VIEs (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Variable Interest Entity [Line Items] |  |  |
Funded commitments | $ 30,927 | $ 0 |
Loss on investments in alternative energy partnerships | 8,682 | $ 0 |
Total amount funded | 88,300 |  |
Aggregate funding commitment | 200,000 |  |
Tax credit | 8,800 |  |
Alternative investments unfunded investment commitments | 111,700 |  |
Variable Interest Entity, Not Primary Beneficiary |  |  |
Variable Interest Entity [Line Items] |  |  |
Loss on investments in alternative energy partnerships | 8,700 |  |
Tax credit | 8,800 |  |
Cash | 224 |  | $ 0
Equipment, net of depreciation | 203,226 |  | 151,721
Other assets | 8,337 |  | 351
Total unconsolidated assets | 211,787 |  | 152,072
Total unconsolidated liabilities | 651 |  | 0
Maximum loss exposure | 159,365 |  | $ 68,298
Variable Interest Entity, Not Primary Beneficiary | Other Assets |  |  |
Variable Interest Entity [Line Items] |  |  |
Total unconsolidated assets | $ 47,600 |  |

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- Definition This item represents the gain (loss) realized during the period from the sale of investments accounted for under the cost method of accounting and any losses recognized thereon for impairments of other than a temporary nature. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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