Revenue from Contracts with Customers - Contract Assets and Liabilities (Details) $ in Thousands	Jun. 30, 2018 USD ($)
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract Assets	$ 21,933
Advanced Connectivity Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract Assets	0
Elastomeric Material Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract Assets	384
Power Electronics Solutions
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract Assets	18,126
Other
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]
Contract Assets	$ 3,423

Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044

Name:	us-gaap_ContractWithCustomerAssetNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant