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Nature of Business and Significant Accounting Policies - Narrative (Details) |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | ---
Feb. 10, 2017 USD ($) | May 31, 2016 | Dec. 31, 2016 USD ($) TradeName contract | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Stock split ratio |  | 2 |  |  |
Amortization of intangible assets |  |  | $ 16,067,000 | $ 15,576,000 | $ 10,048,000
Percentage of contracts with the government |  |  | 80.00% | 77.00% | 99.00%
Number of contract types | contract |  |  | 3 |  |
Deferred compensation plan expense |  |  | $ 1,700,000 | $ 1,900,000 | $ 1,300,000
Impairment of intangible assets |  |  | $ 0 | 0 | 0
Acquired intangible assets, weighted average useful life |  |  | 12 years 2 months 12 days |  |
Deferred tax liabilities |  |  | $ 29,872,000 | 31,524,000 |
Debt issuance costs |  |  | $ 1,700,000 | 2,200,000 |
Accounting Standards Update 2015-17 |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Noncurrent deferred tax assets |  |  |  | (3,600,000) |
Deferred tax liabilities |  |  |  | 3,600,000 |
Accounting Standards Update 2015-03 | Long-term Debt |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Debt issuance costs |  |  |  | 285,000 |
Noncurrent debt issuance costs |  |  |  | 882,000 |
Servicing Contracts |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Acquired intangible assets, weighted average useful life |  |  | 12 years 7 months 6 days |  |
Servicing Contracts | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finite-lived intangible assets, useful life |  |  | 7 years |  |
Servicing Contracts | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finite-lived intangible assets, useful life |  |  | 16 years |  |
Trade names |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finite-lived intangible assets, useful life |  |  | 9 years |  |
Number of trade names | TradeName |  |  | 4 |  |
Acquired technologies |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Finite-lived intangible assets, useful life |  |  | 11 years |  |
Other Capitalized Property Plant and Equipment | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 3 years |  |
Other Capitalized Property Plant and Equipment | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 15 years |  |
Land, Buildings and Improvements | Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 15 years |  |
Land, Buildings and Improvements | Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, plant and equipment, useful life |  |  | 20 years |  |
Product |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Amortization of intangible assets |  |  |  | 13,900,000 | 7,700,000
Service |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Amortization of intangible assets |  |  |  | $ 1,700,000 | $ 2,300,000
Heritage Disposal and Storage | Subsequent Event |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Payments for legal settlements | $ 3,300,000 |  |  |  |

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