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Loans Receivable and Other Lending Investments, net - Investment in Loans and Associated Reserve for Loan Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
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Recorded investment (comprised of a loans carrying value plus accrued interest) in loans and the associated reserve for loan losses |  |  |  |
Loans | $ 849,834 | $ 924,387 |  |
Less: Reserve for loan losses | (53,298) | (53,395) | $ (69,466) | $ (78,489)
Total | 796,536 | 870,992 |  |
Interest receivable | 5,200 | 4,900 |  |
Securities that are evaluated for impairment under ASC 320 | 103,520 | 122,126 |  |
Individually Evaluated for Impairment |  |  |  |
Recorded investment (comprised of a loans carrying value plus accrued interest) in loans and the associated reserve for loan losses |  |  |  |
Loans | 66,500 | 66,725 |  |
Less: Reserve for loan losses | (40,888) | (40,395) |  |
Total | 25,612 | 26,330 |  |
Unamortized discounts, premiums, deferred fees and costs, net (discount) or premium | (500) | (500) |  |
Collectively Evaluated for Impairment |  |  |  |
Recorded investment (comprised of a loans carrying value plus accrued interest) in loans and the associated reserve for loan losses |  |  |  |
Loans | 783,334 | 857,662 |  |
Less: Reserve for loan losses | (12,410) | (13,000) |  |
Total | 770,924 | 844,662 |  |
Unamortized discounts, premiums, deferred fees and costs, net (discount) or premium | $ (2,500) | $ (3,100) |  |

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- Definition Amount of investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References No definition available. + Details
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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.10(3)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of deferred fees paid by borrowers and unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of loans that are being amortized into income as an adjustment to yield. Excludes amounts for loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6378536&loc=d3e10092-111533 + Details
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