Summary of Significant Accounting Policies - Other (Details)	Jul. 01, 2018
Summary of Significant Accounting Policies
Dividends Payable, Date to be Paid	Jul. 01, 2018
Special stock dividend, rate percent	4.00%
Special stock dividend, record date	Jun. 15, 2018

Date the declared dividend will be paid, in CCYY-MM-DD format.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586

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