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Discontinued Operations Discontinued Operations Assets and Liabilities Table (Details) - Oppenheimer Multi Family Housing And Healthcare Finance [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disposal Group, Including Discontinued Operation, Interest Income | $ 8 | $ 943 | $ 1,999
Disposal Group, Including Discontinued Operation, Principal Transactions | 0 | (9,022) | 5,323
Disposal Group, including discontinued operations, Gain on Sale of Assets | 0 | 16,475 | 0
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | 2,165 | 16,917 | 23,262
Disposal Group, Including Discontinued Operation, Revenue | 2,173 | 25,313 | 30,584
Disposal Group, Including Discontinued Operation, Compensation and Related Expenses | 18 | 4,311 | 12,406
Disposal Group, Including Discontinued Operation, Communications and Technology | 27 | 221 | 361
Disposal Group, Including Discontinued Operation, Occupancy and Equipment | 0 | 415 | 302
Disposal Group, Including Discontinued Operation, Interest Expense | 12 | 408 | 994
Disposal Group, Including Discontinued Operation, Other Expense | 45 | 2,619 | 7,382
Disposal Group, Including Discontinued Operation, Operating Expense | 102 | 7,974 | 21,445
Disposal Group, Including Discontinued Operation, Gross Profit (Loss) | 2,071 | 17,339 | 9,139
Income (Loss) from Discontinued Operations, before tax, Attributable to Noncontrolling Interest | 338 | 2,830 | 1,491
Disposal Group, Including Discontinued Operation, Communications and Technology | 5,721 | (14,097) | 3,322
Cash Provided by (Used in) Investing Activities, Discontinued Operations | 0 | 45,448 | 0
Cash Provided by (Used in) Financing Activities, Discontinued Operations | (20,035) | (35,421) | (249)
Net Cash Provided by (Used in) Discontinued Operations | $ (14,314) | $ (4,070) | $ 3,073

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- Definition Amount of cash inflow (outflow) of financing activities of discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 + Details
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- Definition Amount of cash inflow (outflow) of investing activities of discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 + Details
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- Definition Amount of interest expense attributable to disposal group, including, but not limited to, discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section S99 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=26872618&loc=d3e7436-122677 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 50 -Paragraph 5B -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64827811&loc=SL51721673-107760 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1063-107759 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=65878427&loc=d3e1060-107759 + Details
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