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Exit Activity Costs and Asset Impairments (Narrative) (Details) $ in Thousands |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 15, 2016 USD ($) | Jun. 30, 2017 facility | Dec. 31, 2016 USD ($) facility | Dec. 31, 2015 USD ($) facility | Dec. 31, 2014 USD ($)
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Exit activity charges |  |  | $ 13,747 | $ 3,123 | $ 1,671
Restructuring impairment charges |  |  | 7,530 | 8,504 | 208
Exit activity costs |  |  | $ 6,217 | $ 1,418 | 2,126
Number of consolidated facilities to be closed | facility |  |  | 7 | 4 |
Sale leaseback gain |  |  |  | $ 6,799 | 663
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | $ 8,800 |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Net of Tax | 2,000 |  |  |  |
Net proceeds from sale of business | $ 8,300 |  | $ 8,250 | $ 0 | $ 0
Forecast |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Number of consolidated facilities to be closed | facility |  | 5 |  |  |

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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