XML 36 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9
Business Acquisition (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 0 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Dec. 19, 2014
Dec. 31, 2014
Business Acquisition [Line Items]        
Income (Loss) from Continuing Operations Attributable to Parent $ 18.8us-gaap_IncomeLossFromContinuingOperations $ 23.2us-gaap_IncomeLossFromContinuingOperations    
Goodwill 124.5us-gaap_Goodwill     125.5us-gaap_Goodwill
Pronamic And SNN [Member]        
Business Acquisition [Line Items]        
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables       3.5us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Working Capital Adjustments     0.7swm_BusinessCombinationWorkingCapitalAdjustments
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
 
Cash consideration     30.7us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
 
Goodwill       5.0us-gaap_Goodwill
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High 0.5us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
  3.5us-gaap_BusinessCombinationContingentConsiderationArrangementsRangeOfOutcomesValueHigh
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
 
Business Combination, Contingent Consideration, Liability     1.0us-gaap_BusinessCombinationContingentConsiderationLiability
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
 
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory       3.2us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInventory
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other       0.2us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment       9.3us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill       11.6us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets       27.8us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable       1.4us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesAccountsPayable
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Other       1.4us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilitiesOther
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net       25.0us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net       30.0us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= swm_PronamicAndSNNMember
Acquisition-related Costs [Member] | DelStar [Member]        
Business Acquisition [Line Items]        
Income (Loss) from Continuing Operations Attributable to Parent $ (0.3)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_BusinessAcquisitionAxis
= swm_DelStarMember
/ us-gaap_NonrecurringAdjustmentAxis
= us-gaap_AcquisitionRelatedCostsMember
    $ (1.3)us-gaap_IncomeLossFromContinuingOperations
/ us-gaap_BusinessAcquisitionAxis
= swm_DelStarMember
/ us-gaap_NonrecurringAdjustmentAxis
= us-gaap_AcquisitionRelatedCostsMember