Commitments and Contingencies (Details Textual) $ in Thousands	6 Months Ended
Jun. 30, 2018 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Total purchase commitments with suppliers	$ 33,192
Long term purchase commitment expected payment period	during fiscal years 2018 through 2020

The minimum amount the entity agreed to spend under the long-term purchase commitment.

No definition available.

Name:	us-gaap_LongTermPurchaseCommitmentAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration