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Net Income Per Share - Reconciliation of Common Shares Used for Basic and Diluted Earnings Per Share (Detail) - Successor [Member] - shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |
Weighted average number of common shares used for basic earnings per share | 45,229,570 | 45,174,521 | 45,206,429 | 45,173,671
Effect of potential dilutive shares: |  |  |  |
Weighted average number of common shares and potential dilutive shares used for diluted earnings per share | 45,792,083 | 45,174,521 | 45,372,704 | 46,352,214
Restricted Stock Units (RSUs) [Member] |  |  |  |
Effect of potential dilutive shares: |  |  |  |
Effect of potential dilutive shares | 156,023 | 0 | 105,794 | 14,418
Performance Shares [Member] |  |  |  |
Effect of potential dilutive shares: |  |  |  |
Effect of potential dilutive shares | 113,179 | 0 | 60,481 | 2,729
Warrants [Member] |  |  |  |
Effect of potential dilutive shares: |  |  |  |
Effect of potential dilutive shares | 293,311 | 0 | 0 | 1,154,313
Employee Stock Option [Member] |  |  |  |
Effect of potential dilutive shares: |  |  |  |
Effect of potential dilutive shares | 0 | 0 | 0 | 7,083

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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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