Properties and Equipment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Land	$ 4,786us-gaap_Land	$ 4,377us-gaap_Land
Buildings and Improvements, Gross	29,089us-gaap_BuildingsAndImprovementsGross	16,044us-gaap_BuildingsAndImprovementsGross
computer equipment and software	223,744ocr_ComputerEquipmentAndSoftware	284,173ocr_ComputerEquipmentAndSoftware
Machinery and Equipment, Gross	167,174us-gaap_MachineryAndEquipmentGross	153,368us-gaap_MachineryAndEquipmentGross
furniture, fixtures and leasehold improvements	175,644	111,529
Property, Plant and Equipment, Gross	600,437us-gaap_PropertyPlantAndEquipmentGross	569,491us-gaap_PropertyPlantAndEquipmentGross
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(332,684)	(263,603)
Property, Plant and Equipment, Net	$ 267,753us-gaap_PropertyPlantAndEquipmentNet	$ 305,888us-gaap_PropertyPlantAndEquipmentNet

Capitalized gross amount of computer equipment and software as of the balance sheet date

No definition available.

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- Definition

Gross carrying value of long-lived, depreciable furniture, fixtures and leasehold improvements as of the balance sheet date.

+ References

No definition available.

+ Details

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- Definition

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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- Definition

Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount before accumulated depletion of real estate held for productive use, excluding land held for sale.

+ References

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- Definition

Amount before accumulated depreciation of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment.

+ References

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- Definition

Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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