XML 38 R12.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Pension Plans And Other Postretirement Benefit Plans | 6 Months Ended
--- | ---
Jun. 30, 2017
General Discussion of Pension and Other Postretirement Benefits [Abstract] |
Pension Plans and Other Postretirement Benefit Plans | PENSION PLANS AND OTHER POSTRETIREMENT BENEFIT PLANS Avista Utilities Avista Utilities’ pension and other postretirement plans have not changed during the six months ended June 30, 2017. The Company’s funding policy is to contribute at least the minimum amounts that are required to be funded under the Employee Retirement Income Security Act, but not more than the maximum amounts that are currently deductible for income tax purposes. The Company contributed $14.8 million in cash to the pension plan for the six months ended June 30, 2017 and expects to contribute a total of $22.0 million in 2017. The Company contributed $12.0 million in cash to the pension plan in 2016. The Company uses a December 31 measurement date for its defined benefit pension and other postretirement benefit plans. The following table sets forth the components of net periodic benefit costs for the three and six months ended June 30 (dollars in thousands):
| Pension Benefits |  | Other Post-retirement Benefits
| 2017 |  | 2016 |  | 2017 |  | 2016
Three months ended June 30: |  |  |  |  |  |  |
Service cost | $ | 5,092 |  |  | $ | 4,569 |  |  | $ | 799 |  |  | $ | 804 |
Interest cost | 6,976 |  |  | 6,900 |  |  | 1,374 |  |  | 1,534 |
Expected return on plan assets | (7,900 | ) |  | (6,875 | ) |  | (475 | ) |  | (475 | )
Amortization of prior service cost | — |  |  | — |  |  | (312 | ) |  | (312 | )
Net loss recognition | 2,317 |  |  | 2,201 |  |  | 1,320 |  |  | 1,494 |
Net periodic benefit cost | $ | 6,485 |  |  | $ | 6,795 |  |  | $ | 2,706 |  |  | $ | 3,045 |
Six months ended June 30: |  |  |  |  |  |  |
Service cost | $ | 10,134 |  |  | $ | 9,088 |  |  | $ | 1,623 |  |  | $ | 1,583 |
Interest cost | 13,927 |  |  | 13,800 |  |  | 2,773 |  |  | 3,093 |
Expected return on plan assets | (15,800 | ) |  | (13,625 | ) |  | (950 | ) |  | (950 | )
Amortization of prior service cost | — |  |  | — |  |  | (624 | ) |  | (624 | )
Net loss recognition | 4,863 |  |  | 4,091 |  |  | 2,593 |  |  | 2,859 |
Net periodic benefit cost | $ | 13,124 |  |  | $ | 13,354 |  |  | $ | 5,415 |  |  | $ | 5,961 |
Total net periodic benefit costs in the table above are recorded to the same accounts as labor expense. Labor and benefits expense is recorded to various projects based on whether the work is a capital project or an operating expense. Approximately 40 percent of all labor and benefits is capitalized to utility property and 60 percent is expensed to other operating expenses.

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

X
- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66047640&loc=d3e39622-114963 + Details
Name: | us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration