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Purchased Receivables - Summary of Components of Net Purchased Receivables (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Dec. 31, 2015
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Purchased Receivables [Abstract] |  |  |  |  |  |
Purchased receivables | $ 13,130 |  | $ 20,662 |  |  |
Reserve for purchased receivable losses | (200) | $ (194) | (171) | $ (163) | $ (163) | $ (181)
Total | $ 12,930 |  | $ 20,491 |  |  |

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- Definition Purchased Receivables + References No definition available. + Details
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- Definition Purchased Receivables [Abstract] + References No definition available. + Details
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- Definition Purchased Receivables Fair Value Disclosure + References No definition available. + Details
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- Definition Reserve For Purchased Receivable Gains Losses + References No definition available. + Details
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