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Significant Accounting Policies and Consolidated Financial Statement Components Schedule of Allowance for uncollectible loans and fees receivable (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Allowance for uncollectible loans and fees receivable: |  |
Balance at beginning of period | $ (43,300) | $ (21,500)
Provision for loan losses | (77,600) | (53,700)
Charge offs | 63,800 | 37,700
Recoveries | (5,900) | (5,800)
Balance at end of period | (63,000) | (43,300)
Loans and fees receivable: |  |
Balance at end of period individually evaluated for impairment | (400) | (600)
Balance at end of period collectively evaluated for impairment | (62,600) | (42,700)
Loans and fees receivable, gross | 393,900 | 290,700
Loans and fees receivable individually evaluated for impairment | 600 | 1,000
Loans and fees receivable collectively evaluated for impairment | 393,300 | 289,700
Credit Card Receivable [Member] |  |
Allowance for uncollectible loans and fees receivable: |  |
Balance at beginning of period | (1,400) | (1,200)
Provision for loan losses | (19,200) | 700
Charge offs | 3,800 | 1,800
Recoveries | (1,400) | (2,700)
Balance at end of period | (18,200) | (1,400)
Loans and fees receivable: |  |
Balance at end of period individually evaluated for impairment | 0 | 0
Balance at end of period collectively evaluated for impairment | (18,200) | (1,400)
Loans and fees receivable, gross | 87,200 | 11,000
Loans and fees receivable individually evaluated for impairment | 0 | 0
Loans and fees receivable collectively evaluated for impairment | 87,200 | 11,000
Automobile Loan [Member] |  |
Allowance for uncollectible loans and fees receivable: |  |
Balance at beginning of period | (2,100) | (1,700)
Provision for loan losses | (1,900) | (2,600)
Charge offs | 3,000 | 3,300
Recoveries | (1,300) | (1,100)
Balance at end of period | (2,300) | (2,100)
Loans and fees receivable: |  |
Balance at end of period individually evaluated for impairment | (200) | (300)
Balance at end of period collectively evaluated for impairment | (2,100) | (1,800)
Loans and fees receivable, gross | 77,800 | 77,100
Loans and fees receivable individually evaluated for impairment | 400 | 700
Loans and fees receivable collectively evaluated for impairment | 77,400 | 76,400
Other Unsecured Lending Products [Member] |  |
Allowance for uncollectible loans and fees receivable: |  |
Balance at beginning of period | (39,800) | (18,600)
Provision for loan losses | (56,500) | (51,800)
Charge offs | 57,000 | 32,600
Recoveries | (3,200) | (2,000)
Balance at end of period | (42,500) | (39,800)
Loans and fees receivable: |  |
Balance at end of period individually evaluated for impairment | (200) | (300)
Balance at end of period collectively evaluated for impairment | (42,300) | (39,500)
Loans and fees receivable, gross | 228,900 | 202,600
Loans and fees receivable individually evaluated for impairment | 200 | 300
Loans and fees receivable collectively evaluated for impairment | $ 228,700 | $ 202,300

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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 The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Definition Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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