Business Combination - Estimated Fair Value of Intangible Assets Acquired (Details) - Certified Thermoplastics Co., LLC $ in Thousands	Apr. 23, 2018 USD ($)
Business Acquisition [Line Items]
Estimated Fair Value (In thousands)	$ 8,000
Customer relationships
Business Acquisition [Line Items]
Useful Life (In years)	10 years
Estimated Fair Value (In thousands)	$ 6,600
Trade name
Business Acquisition [Line Items]
Useful Life (In years)	15 years
Estimated Fair Value (In thousands)	$ 1,400

The amount of identifiable intangible assets recognized as of the acquisition date.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=108330185&loc=d3e2207-128464

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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