XML 47 R36.htm IDEA: XBRL DOCUMENT
v3.20.2

Accounts receivable and allowance for doubtful accounts Receivables and allowance for expected credit losses (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2020
Credit Loss [Abstract] |
Financing Receivable, Allowance for Credit Loss [Table Text Block] | Details of the Company's expected credit losses were as follows:
| Electric | Natural gas distribution | Construction materials and contracting | Construction services | Total
| (In thousands) |  |  |  |
At January 1, 2020 | $ | 328 |  | $ | 1,056 |  | $ | 5,357 |  | $ | 1,756 |  | $ | 8,497 |
Current expected credit loss provision | 555 |  | 1,156 |  | 694 |  | 1,150 |  | 3,555 |
Less write-offs charged against the allowance | 500 |  | 624 |  | 68 |  | 73 |  | 1,265 |
Credit loss recoveries collected | 109 |  | 229 |  | — |  | — |  | 338 |
At March 31, 2020 | $ | 492 |  | $ | 1,817 |  | $ | 5,983 |  | $ | 2,833 |  | $ | 11,125 |
Current expected credit loss provision | 303 |  | 190 |  | (314) |  | 896 |  | 1,075 |
Less write-offs charged against the allowance | 224 |  | 677 |  | 44 |  | 454 |  | 1,399 |
Credit loss recoveries collected | 88 |  | 201 |  | — |  | — |  | 289 |
At June 30, 2020 | $ | 659 |  | $ | 1,531 |  | $ | 5,625 |  | $ | 3,275 |  | $ | 11,090 |

X
- Definition Tabular disclosure of allowance for credit loss on financing receivable. + 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=121611835&loc=SL6953423-111524 Reference 2: 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
Name: | us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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