XML 50 R36.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Accounts Receivable (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Accounts Receivable. |
Summary of accounts receivable | The following is a summary of accounts receivable at December 31 (in thousands):
|  | 2017 |  | 2016 |
Contracts receivable, net of allowance for doubtful accounts of $480 at December 31, 2017 and $1,030 at December 31, 2016, respectively |  | $ | 286,113 |  | $ | 340,871 |
Retention receivable |  |  | 66,586 |  |  | 46,394 |
|  |  | 352,699 |  |  | 387,265 |
Other accounts receivable |  |  | 5,476 |  |  | 735 |
|  | $ | 358,175 |  | $ | 388,000 |

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

X
- Definition Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3,4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration