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Debt Obligations Debt Obligations - Schedule of Maturities (Tables) | 6 Months Ended
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Jun. 30, 2018
Debt Disclosure [Abstract] |
Schedule of Maturities of Long-term Debt [Table Text Block] | As of June 30, 2018, the scheduled principal payments on debt outstanding under the 2018 Facility were as follows (in thousands):
Remainder of fiscal year 2018 | $ | 2,500 |
Fiscal year 2019 | 3,750 |
Fiscal year 2020 | 5,000 |
Fiscal year 2021 | 5,000 |
Fiscal year 2022 | 6,250 |
Fiscal year 2023 | 197,608 |
Total | $ | 220,108 |

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- Definition Tabular disclosure of the combined aggregate amount of maturities and sinking fund requirements for all long-term borrowings for each of the five years following the date of the latest balance sheet date presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 + Details
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