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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) shares in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jul. 01, 2017 | Jun. 30, 2018 | Jul. 01, 2017
Income Statement [Abstract] |  |  |  |
Revenues | $ 379.2 | $ 349.7 | $ 731.1 | $ 690.3
Costs and expenses: |  |  |  |
Cost of products sold | 281.5 | 273.6 | 543.3 | 526.1
Selling, general and administrative | 72.6 | 70.3 | 141.2 | 138.6
Intangible amortization | 0.8 | 0.1 | 1.0 | 0.3
Special charges, net | 1.6 | 0.5 | 3.6 | 1.0
Operating income | 22.7 | 5.2 | 42.0 | 24.3
Other income (expense), net | 2.2 | (3.2) | 3.2 | (5.2)
Interest expense | (5.1) | (4.6) | (9.4) | (8.6)
Interest income | 0.3 | 0.3 | 0.8 | 0.7
Income (loss) from continuing operations before income taxes | 20.1 | (2.3) | 36.6 | 11.2
Income tax provision | (0.4) | (6.0) | (4.5) | (9.2)
Income (loss) from continuing operations | 19.7 | (8.3) | 32.1 | 2.0
Income (loss) from discontinued operations, net of tax | 0.0 | 0.0 | 0.0 | 0.0
Gain (loss) on disposition of discontinued operations, net of tax | 3.3 | (0.7) | 3.3 | 6.4
Income (loss) from discontinued operations, net of tax | 3.3 | (0.7) | 3.3 | 6.4
Net income (loss) | $ 23.0 | $ (9.0) | $ 35.4 | $ 8.4
Basic income (loss) per share of common stock: |  |  |  |
Income (loss) from continuing operations attributable to SPX Corporation common shareholders (in dollars per share) | $ 0.46 | $ (0.19) | $ 0.75 | $ 0.05
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share) | 0.08 | (0.02) | 0.08 | 0.15
Net income (loss) per share attributable to SPX Corporation common shareholders (in dollars per share) | $ 0.54 | $ (0.21) | $ 0.83 | $ 0.20
Weighted-average number of common shares outstanding — basic | 42,988 | 42,388 | 42,881 | 42,249
Diluted income (loss) per share of common stock: |  |  |  |
Income (loss) from continuing operations attributable to SPX Corporation common shareholders (in dollars per share) | $ 0.44 | $ (0.19) | $ 0.72 | $ 0.04
Income (loss) from discontinued operations attributable to SPX Corporation common shareholders (in dollars per share) | 0.07 | (0.02) | 0.07 | 0.15
Net income (loss) per share attributable to SPX Corporation common shareholders (in dollars per share) | $ 0.51 | $ (0.21) | $ 0.79 | $ 0.19
Weighted-average number of common shares outstanding — diluted | 44,723 | 42,388 | 44,545 | 43,622
Comprehensive income (loss) | $ 20.0 | $ (8.9) | $ 36.8 | $ 7.5

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- Definition Amount of the cost of borrowed funds accounted for as interest expense. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.9) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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- Definition Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(b)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=96868048&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=84234705&loc=SL4591551-111686 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=84161450&loc=SL4573702-111684 + Details
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