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Receivables, net (Tables) | 12 Months Ended
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Dec. 31, 2016
Receivables [Abstract] |
Components of Receivables | Total receivables, net of allowance for doubtful accounts of approximately $30 thousand and $100 thousand as of December 31, 2016 and 2015, respectively, were as follows (in thousands):
| 2016 |  | 2015
Billed | $ | 55,669 |  |  | $ | 43,503 |
Unbilled | 45,549 |  |  | 34,968 |
Total receivables | $ | 101,218 |  |  | $ | 78,471 |

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- 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
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