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Schedule II - Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2017
Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block] |
|  |  |  | Additions |  |  |  |
Description |  | Balance at beginning of year |  | Charged to costs and expenses |  | Charged to other accounts(1) |  | Deductions(2) |  | Balance at end of year
Year ended December 31, 2017 |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 8,093 |  |  | 5,251 |  |  | 6,799 |  |  | (10,234 | ) |  | $ | 9,909 |
Workers’ compensation loss reserves |  | $ | 15,784 |  |  | 2,908 |  |  | — |  |  | (3,915 | ) |  | $ | 14,777 |
Year ended December 31, 2016 |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 6,682 |  |  | 2,881 |  |  | 7,907 |  |  | (9,377 | ) |  | $ | 8,093 |
Workers’ compensation loss reserves |  | $ | 15,020 |  |  | 2,693 |  |  | — |  |  | (1,929 | ) |  | $ | 15,784 |
Year ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |
Allowance for doubtful accounts and billing adjustments |  | $ | 4,404 |  |  | 2,196 |  |  | 8,290 |  |  | (8,208 | ) |  | $ | 6,682 |
Workers’ compensation loss reserves |  | $ | 15,564 |  |  | 2,117 |  |  | — |  |  | (2,661 | ) |  | $ | 15,020 |
______ (1) Charges to other accounts include the provision for permanent placement fallouts and billing adjustments that have been deducted from revenues in the accompanying consolidated statements of operations and comprehensive income. (2) Deductions from the allowance for doubtful accounts and billing adjustments include write-offs of uncollectible accounts receivable and permanent placements fallouts that have been charged against the allowance for doubtful accounts and billing adjustments. Deductions from workers’ compensation loss reserves include payments of claims and changes related to anticipated insurance and indemnification recoveries which have corresponding changes in the workers' compensation receivable balance in the accompanying consolidated balance sheets.

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- Definition The entire disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). Alternatively, disclosure of the required information may be within the footnotes to the financial statements or a supplemental schedule to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -URI http://asc.fasb.org/topic&trid=2122369 + Details
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- References No definition available. + Details
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