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Finance Receivables - Assessment of credit quality by creditworthiness (Details 4) - Finance receivables - USD ($) $ in Thousands | Mar. 31, 2018 | Mar. 31, 2017 | Mar. 31, 2016
--- | --- | --- | ---
Contracts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | $ 419,827 | $ 498,031 | $ 482,864
Finance receivables, gross contract | 423,900 | 502,050 |
Contracts | Performing accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 406,159 | 473,446 |
Contracts | Non-performing accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 13,668 | 24,585 |
Contracts | Chapter 13 bankrupt accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Finance receivables, gross contract | 4,073 | 4,019 |
Direct Loans |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 9,908 | 10,628 | $ 10,978
Finance receivables, gross contract | 9,964 | 10,670 |
Direct Loans | Performing accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 9,645 | 10,406 |
Direct Loans | Non-performing accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total | 263 | 222 |
Direct Loans | Chapter 13 bankrupt accounts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Finance receivables, gross contract | $ 56 | $ 42 |

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