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Notes and Contracts Receivable (Tables) | 12 Months Ended
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Dec. 31, 2016
Receivables [Abstract] |
Schedule of doubtful accounts | During the years ended December 31, 2016, 2015 and 2014, our allowance for doubtful accounts was as follows (amounts in thousands):
|  | 2016 |  | 2015 |  | 2014
Balance, beginning of period |  | $ | 6,470 |  |  | $ | 7,110 |  |  | $ | 7,927 |
Provision for losses |  | 3,926 |  |  | 4,055 |  |  | 4,209 |
Write-offs |  | (5,018 | ) |  | (4,695 | ) |  | (5,026 | )
Balance, end of period |  | $ | 5,378 |  |  | $ | 6,470 |  |  | $ | 7,110 |

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- References No definition available. + Details
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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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