XML 24 R15.htm IDEA: XBRL DOCUMENT
v3.20.2

Property and Equipment | 12 Months Ended
--- | ---
Dec. 31, 2019
Property, Plant and Equipment [Abstract] |
Property and Equipment | 7. Property and Equipment The composition of property and equipment as of December 31, 2018 and 2019 is as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | ​ |  | ​ | ​ |  | Estimated useful
​ | ​ | 2018 | ​ | 2019 | ​ | life (years)
Land | ​ | $ | 7,138 | ​ | $ | 7,138 |  | —
Buildings and improvements | ​ |  | 20,883 | ​ |  | 21,143 |  | 5- 40
Furniture and office equipment | ​ | ​ | 76,856 | ​ | ​ | 73,457 | ​ | 5- 7
Computer hardware | ​ |  | 13,546 | ​ |  | 10,173 |  | 3- 7
Computer software | ​ |  | 129,519 | ​ |  | 137,150 |  | 3- 10
Leasehold improvements | ​ |  | 44,215 | ​ |  | 49,241 |  | 3- 10
Construction in progress | ​ |  | 8,354 | ​ |  | 7,808 |  | —
​ | ​ |  | 300,511 | ​ |  | 306,110 | ​ | ​
Accumulated depreciation and amortization | ​ |  | (177,834) | ​ |  | (189,081) |  |
​ | ​ | $ | 122,677 | ​ | $ | 117,029 | ​ | ​
​ Construction in progress includes costs associated with the construction and renovation of campuses and the development of information technology applications.

X
- References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99893-112916 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -URI http://asc.fasb.org/topic&trid=2155823 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=120429125&loc=SL120174063-112916 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 360 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120429125&loc=d3e99779-112916 + Details
Name: | us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration