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Goodwill and Intangible Assets - Additional Information (Detail) - USD ($) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2015 | Dec. 31, 2014
Schedule Of Goodwill And Other Intangible Assets [Line Items] |  |  |  |  |
Amortization expense of finite life intangible assets | $ 3,935,000 |  | $ 2,622,000 |  |
Amortization expense of finite life intangibles for 2016 | 10,100,000 |  |  |  |
Amortization expense of finite life intangibles for 2017 | 11,600,000 |  |  |  |
Amortization expense of finite life intangibles for 2018 | 10,000,000 |  |  |  |
Amortization expense of finite life intangibles for 2019 | 8,900,000 |  |  |  |
Amortization expense of finite life intangibles for 2020 | 7,100,000 |  |  |  |
Goodwill | 221,717,000 | $ 220,163,000 |  | $ 220,163,000 | $ 165,861,000
Intangible assets-indefinite life | 26,458,000 | 26,337,000 |  | 26,337,000 | $ 19,766,000
Impairment of intangible assets |  |  |  | 3,340,000 |
Goodwill or indefinite life intangible asset charges | $ 0 |  |  |  |
Reporting Unit One [Member] |  |  |  |  |
Schedule Of Goodwill And Other Intangible Assets [Line Items] |  |  |  |  |
Goodwill impairment charges |  |  |  | 0 |
Goodwill |  | 77,900,000 |  | $ 77,900,000 |
Estimated fair value of goodwill exceeds from its carrying value |  |  |  | 8.00% |
Decrease in projected revenue growth rate |  |  |  | 1.10% |
Decrease in projected operational profit |  |  |  | 3.90% |
Three Reporting Units [Member] |  |  |  |  |
Schedule Of Goodwill And Other Intangible Assets [Line Items] |  |  |  |  |
Intangible assets-indefinite life |  | $ 10,000,000 |  | $ 10,000,000 |
Fair value lower than the aggregate carrying value |  | 33.40% |  | 33.40% |
Impairment of intangible assets |  | $ 3,300,000 |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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