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Segment and Geographic Information (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2014 Segment | Mar. 31, 2013 | Mar. 31, 2012
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of reportable segments |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit | $ 62.3 |  | $ 56.8 | $ 57.2 | $ 61.9 | $ 56.1 |  | $ 48.2 | $ 52.6 | $ 51.7 | $ 238.2 |  | $ 208.6 |  | $ 256.6 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 16.10% |  | 15.20% |  | 16.30% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 37.2 |  | (0.6) |  | 67.5 |
Total assets | 1,032.3 |  |  |  |  | 818.8 |  |  |  |  | 1,032.3 |  | 818.8 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 53.1 |  | 49.8 |  | 64.4 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 58.1 |  | 55.8 |  | 57.7 |
Long-lived assets | 393.8 |  |  |  |  | 382.8 |  |  |  |  | 393.8 |  | 382.8 |  |  |
Operating income effect between the Corporate and Europe segment for modification in internal financial reporting changes |  |  |  |  |  |  |  |  |  |  |  |  | 9.3 |  | 11.0 |
Receivables and cash advance | 45 |  |  |  |  |  |  |  |  |  | 45 |  |  |  |  |
Reversal of deferred tax asset valuation allowances | 119.2 |  |  |  |  |  |  |  |  |  | 119.2 |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 1,477.6 |  | 1,376.0 |  | 1,577.2 |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 1,477.6 |  | 1,376.0 |  | 1,577.2 |
Modules/Assemblies [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 379.9 |  | 358.5 |  | 410.4 |
Oil Coolers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 215.4 |  | 194.1 |  | 249.4 |
EGR Coolers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 172.5 |  | 136.1 |  | 152.7 |
Building HVAC [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 159.5 |  | 151.8 |  | 153.3 |
Charge-Air Coolers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 157.0 |  | 161.8 |  | 173.9 |
Condensers [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 129.2 |  | 128.8 |  | 101.5 |
Radiators [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 129.0 |  | 134.4 |  | 191.4 |
Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 135.1 |  | 110.5 |  | 144.6 |
United States [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 112.9 |  |  |  |  | 115.1 |  |  |  |  | 112.9 |  | 115.1 |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 645.7 |  | 637.4 |  | 666.2 |
Germany [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 94.6 |  |  |  |  | 94.3 |  |  |  |  | 94.6 |  | 94.3 |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 229.5 |  | 214.8 |  | 285.9 |
Brazil [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 122.0 |  | 128.8 |  | 169.1 |
Hungary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 150.3 |  | 117.6 |  | 149.1 |
Other [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-lived assets | 186.3 |  |  |  |  | 173.4 |  |  |  |  | 186.3 |  | 173.4 |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 330.1 |  | 277.4 |  | 306.9 |
North America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 93.5 |  | 81.4 |  | 89.7 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 16.40% |  | 14.40% |  | 14.90% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 42.1 |  | 39.2 |  | 47.9 |
Total assets | 218.1 |  |  |  |  | 218.3 |  |  |  |  | 218.1 |  | 218.3 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 18.9 |  | 19.0 |  | 15.2 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 19.3 |  | 20.1 |  | 20.0 |
Net sales |  |  |  |  |  |  |  |  |  |  | 568.7 |  | 564.5 |  | 602.0 |
Europe [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 70.8 |  | 61.0 |  | 85.1 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 12.10% |  | 12.30% |  | 14.10% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 9.6 | [1] | (25.4) | [1] | 26.3 | [1]
Total assets | 367.9 |  |  |  |  | 332.2 |  |  |  |  | 367.9 |  | 332.2 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 22.9 |  | 16.5 |  | 29.8 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 26.6 |  | 23.4 |  | 26.5 |
Net sales |  |  |  |  |  |  |  |  |  |  | 584.4 |  | 498.0 |  | 602.8 |
South America [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 20.8 |  | 22.5 |  | 30.9 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 16.90% |  | 16.80% |  | 17.60% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 7.5 |  | 11.2 |  | 10.4 |
Total assets | 80.1 |  |  |  |  | 91.8 |  |  |  |  | 80.1 |  | 91.8 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 5.7 |  | 3.4 |  | 5.2 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 3.3 |  | 3.7 |  | 4.1 |
Net sales |  |  |  |  |  |  |  |  |  |  | 122.7 |  | 133.8 |  | 175.6 |
Asia [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 8.9 |  | 1.7 |  | 7.9 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 12.50% |  | 2.80% |  | 9.40% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | (3.3) |  | (8.8) |  | (2.5) |
Total assets | 92.8 |  |  |  |  | 91.3 |  |  |  |  | 92.8 |  | 91.3 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 4.6 |  | 7.8 |  | 12.5 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 6.7 |  | 6.4 |  | 5.0 |
Net sales |  |  |  |  |  |  |  |  |  |  | 71.5 |  | 59.5 |  | 84.1 |
Commercial Products [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 43.4 |  | 40.8 |  | 42.5 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 29.60% |  | 29.30% |  | 29.90% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 9.4 |  | 10.0 |  | 14.3 |
Total assets | 132.7 | [2] |  |  |  | 73.7 | [2] |  |  |  | 132.7 | [2] | 73.7 | [2] |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital expenditures |  |  |  |  |  |  |  |  |  |  | 1.0 |  | 3.1 |  | 1.7 |
Total depreciation and amortization expense |  |  |  |  |  |  |  |  |  |  | 2.2 |  | 2.2 |  | 2.1 |
Net sales |  |  |  |  |  |  |  |  |  |  | 146.5 |  | 139.3 |  | 142.2 |
Segment Total [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 237.4 |  | 207.4 |  | 256.1 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 15.90% |  | 14.90% |  | 15.90% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | 65.3 |  | 26.2 |  | 96.4 |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | 1,493.8 |  | 1,395.1 |  | 1,606.7 |
Corporate and Eliminations [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales, gross profit, operating (loss) income and total assets by segment [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gross profit |  |  |  |  |  |  |  |  |  |  | 0.8 |  | 1.2 |  | 0.5 |
Gross profit (% of sales) (in hundredths) |  |  |  |  |  |  |  |  |  |  | 0.00% |  | 0.00% |  | 0.00% |
Operating (loss) income |  |  |  |  |  |  |  |  |  |  | (28.1) | [1] | (26.8) | [1] | (28.9) | [1]
Total assets | 140.7 | [3] |  |  |  | 11.5 | [3] |  |  |  | 140.7 | [3] | 11.5 | [3] |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  | $ (16.2) |  | $ (19.1) |  | $ (29.5) |
[1] | Segment operating income for fiscal 2013 and 2012 has been recast to conform to the fiscal 2014 presentation. The Company has modified its internal financial reporting of intercompany charges for research and development and intercompany royalties between Corporate and the Europe segment, which totaled $9.3 million and $11.0 million for fiscal years 2013 and 2012, respectively. There was no impact on the total Company consolidated financial results.
[2] | Total assets within the Commercial Products segment included receivables and cash advances from the Company’s insurance provider and reconstruction costs paid to date related to the Airedale fire, which totaled $45.0 million as of March 31, 2014. See Note 2 for additional information.
[3] | The increase in total assets within corporate and eliminations was primarily due to a $119.2 million reversal of deferred tax asset valuation allowances in the U.S. as of March 31, 2014. See Note 8 for additional information.

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- Definition Total increases or decreases in allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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