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ALLOWANCE FOR DOUBTFUL ACCOUNTS (Tables) | 6 Months Ended
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Jun. 30, 2021
Credit Loss [Abstract] |
Reconciliation of allowance for doubtful accounts | A reconciliation of the beginning and ending balances of the allowance for doubtful accounts is as follows (in thousands):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Balance, beginning of the period | $ | 1,429 |  |  | $ | 2,021 |  |  | $ | 1,402 |  |  | $ | 1,466 |
Charges to earnings | 629 |  |  | 69 |  |  | 1,145 |  |  | 949 |
Write-off of uncollectible accounts receivable | (585) |  |  | (337) |  |  | (1,079) |  |  | (669) |
Recoveries collected | — |  |  | 3 |  |  | 5 |  |  | 10 |
Balance, end of the period | $ | 1,473 |  |  | $ | 1,756 |  |  | $ | 1,473 |  |  | $ | 1,756 |

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- Definition Tabular disclosure of allowance for credit loss on accounts receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919249-210447 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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