Subsequent Event (Details) - Chief Executive Officer - Subsequent Event	Feb. 26, 2018 tranche $ / shares
Subsequent Event [Line Items]
Number of vesting tranches of share-based awards \| tranche	12
Options available for grant as a percent of common stock outstanding	1.00%
Exercise price (in usd per share) \| $ / shares	$ 28.58

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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