XML 29 R22.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Trade accounts receivable, unbilled services and payments on account (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2018
Contracts Receivable [Abstract] |
Schedule of Contracts with Customers, Asset and Liabilities | Trade accounts receivables and unbilled revenue are as follows:
| June 30, 2018 |  |  | December 31, 2017 |
| (in thousands)
Contract assets: |  |  |
Billed services (accounts receivable) | $ | 412,933 |  |  | $ | 388,431 |
Unbilled services (unbilled revenue) | 274,501 |  |  | 268,509 |
Trade accounts receivable and unbilled revenue | 687,434 |  |  | 656,940 |
Allowance for doubtful accounts | (8,361 | ) |  | (8,930 | )
Trade accounts receivable and unbilled revenue, net | $ | 679,073 |  |  | $ | 648,010 |
Unbilled services and payments on account were as follows:
(in thousands, except percentages) | June 30, 2018 |  |  | December 31, 2017 |  |  | $ Change |  | % Change
Unbilled services (unbilled revenue) | $ | 274,501 |  |  | $ | 268,509 |  |  | $ | 5,992 |  |  | 2.2 | %
Unearned revenue (payments on account) | (326,741 | ) |  | (298,992 | ) |  | (27,749 | ) |  | 9.3 | %
Net balance | $ | (52,240 | ) |  | $ | (30,483 | ) |  | $ | (21,757 | ) |  | (71.4 | )%

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

X
- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130551-203045 + Details
Name: | us-gaap_ContractWithCustomerAssetAndLiabilityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration