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Business Combination - Schedule of Merger Related Expenses (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Combinations [Abstract] |  |  |  |  |  |  |  |  |  |  |
Data processing fees |  |  |  |  |  |  |  |  | $ 6,017 | $ 3,956 | $ 4,844
Professional fees |  |  |  |  |  |  |  |  | 4,414 | 2,771 | 5,982
Employee severance payments |  |  |  |  |  |  |  |  | 15,660 | 1,177 | 5,457
Other/miscellaneous fees |  |  |  |  |  |  |  |  | 820 | 389 | 251
Merger related expenses | $ 1,288 | $ 2,030 | $ 8,434 | $ 18,310 | $ 1,259 | $ 3,153 | $ 8,606 | $ 1,480 | $ 26,911 | $ 8,293 | $ 16,534

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- Definition Business Combination, Control Payments + References No definition available. + Details
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- Definition Business Combination, IT Expenses + References No definition available. + Details
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- Definition Business Combination, Miscellaneous Expenses + References No definition available. + Details
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- Definition Business Combination, Professional Fees + References No definition available. + Details
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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=84229725&loc=d3e1043-128460 + Details
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- References No definition available. + Details
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