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Commitments and Contingencies Narrative (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2016 complaint | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |
Restricted cash |  | $ 20,057 | $ 12,085
Line of Credit [Member] | Standby Letters of Credit [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Letters of credit outstanding, amount |  | 500 | $ 500
Limited Disruption in Service [Member] | Migration of Third-Party Card Processor [Member] | Pending Litigation [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency, new claims filed, number | complaint | 2 |  |
Limited Disruption in Service [Member] | Migration of Third-Party Card Processor [Member] | Other Current Liabilities [Member] | Pending Litigation [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Loss contingency accrual |  | $ 2,300 |

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