Related Party Transactions Insurance Income Strategies Ltd. (Details)	3 Months Ended
Sep. 30, 2018 USD ($)
Equity Method Investee [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Rate	9.00%
Variable Interest Entity, Primary Beneficiary [Member]
Related Party Transaction [Line Items]
Preferred Stock, Value, Issued	$ 15,000,000
Variable Interest Entity, Primary Beneficiary [Member] \| Equity Method Investee [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Rate	0.90%

Aggregate par or stated value of issued nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable preferred shares, par value and other disclosure concepts are in another section within stockholders' equity.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_PreferredStockValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant