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RESTRUCTURING, IMPAIRMENT AND OTHER CHARGES: Summary of restructuring activity (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2018
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring charges and adjustments | $ 5,043 | $ (765) | $ 5,534 | $ 2,066 |
Restructuring Reserve, at the end of the period |  |  |  |  | $ 6,000
Continuing operations |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Reserve, at the beginning of the period |  |  | 5,829 |  | 5,829
Restructuring charges and adjustments |  |  |  |  | 5,534
Payments |  |  |  |  | (2,241)
Restructuring Reserve, at the end of the period |  |  |  |  | 9,122
Continuing operations | Associate-related reserves |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Reserve, at the beginning of the period |  |  | 541 |  | 541
Restructuring charges and adjustments |  |  |  |  | 3,952
Payments |  |  |  |  | (1,363)
Restructuring Reserve, at the end of the period |  |  |  |  | 3,130
Continuing operations | Lease accruals |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |
Restructuring Reserve, at the beginning of the period |  |  | $ 5,288 |  | 5,288
Restructuring charges and adjustments |  |  |  |  | 1,582
Payments |  |  |  |  | (878)
Restructuring Reserve, at the end of the period |  |  |  |  | $ 5,992

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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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