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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
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |
Weighted average number of common shares used for basic earnings per share | 45,176,978 | 45,156,202
Effect of potential dilutive shares: |  |
Weighted average number of common shares and potential dilutive shares used for diluted earnings per share | 45,243,997 | 46,948,999
Restricted Stock Units (RSUs) [Member] |  |
Effect of potential dilutive shares: |  |
Effect of potential dilutive shares | 56,902 | 25,013
Performance Shares [Member] |  |
Effect of potential dilutive shares: |  |
Effect of potential dilutive shares | 10,117 | 3,145
Warrants [Member] |  |
Effect of potential dilutive shares: |  |
Effect of potential dilutive shares | 0 | 1,751,798
Anti-dilutive shares excluded from reconciliation | 4,407,537 |
Employee Stock Option [Member] |  |
Effect of potential dilutive shares: |  |
Effect of potential dilutive shares | 0 | 12,841
Anti-dilutive shares excluded from reconciliation | 176,668 | 110,000

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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