Stockholders' Equity - Dividends (Details) $ / shares in Units, $ in Millions	Sep. 15, 2017 USD ($) $ / shares
Equity [Abstract]
Quarterly cash dividend (in dollars per share) \| $ / shares	$ 0.16
Amount of quarterly cash dividend declared \| $	$ 30.3

Aggregate dividends declared during the period for each share of common stock outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

Name:	us-gaap_CommonStockDividendsPerShareDeclared
Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration