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Supplemental Information (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Text Block Supplement [Abstract] |
Schedule of Allowance for Doubtful Accounts | Allowance for Doubtful Accounts
|  | 2018 |  |  | 2017 |  |  | 2016 |
Balance at beginning of period |  | $ | 3,853 |  |  | $ | 2,591 |  |  | $ | 2,138 |
Bad debt expense |  |  | 2,480 |  |  |  | 1,480 |  |  |  | 1,089 |
Write-offs, net of recoveries |  |  | (1,027 | ) |  |  | (219 | ) |  |  | (635 | )
Effect of foreign currency translation |  |  | (22 | ) |  |  | 1 |  |  |  | (1 | )
Balance at end of period |  | $ | 5,284 |  |  | $ | 3,853 |  |  | $ | 2,591 |
Schedule of Income Tax Valuation Allowance | Income Tax Valuation Allowance
|  | 2018 |  |  | 2017 |  |  | 2016 |
Balance at beginning of period |  | $ | 1,636 |  |  | $ | 1,131 |  |  | $ | 933 |
Provision for income taxes - valuation allowance |  |  | 3,476 |  |  |  | 505 |  |  |  | 198 |
Balance at end of period |  | $ | 5,112 |  |  | $ | 1,636 |  |  | $ | 1,131 |

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- Definition Tabular disclosure of financing receivables (examples of financing receivables include loans, trade accounts receivable and notes receivable) and activity in the allowance for credit losses account. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524 + Details
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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32537-109319 + Details
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