Revenue Recognition - Additional Information (Details)	6 Months Ended
Jun. 30, 2018
Revenue from Contract with Customer [Abstract]
Description of payment terms	In circumstances where credit is extended, payment terms generally range from 30 to 120 days and customer deposits may be required.

Description of payment terms in contract with customer. Includes, but is not limited to, timing of payment, existence of financing component, variability of consideration and constraint on variable consideration.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130554-203045

Name:	us-gaap_RevenuePerformanceObligationDescriptionOfPaymentTerms
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration