Investments (Details Narrative)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Notes to Financial Statements
Brokered certificates of deposit	$ 24,871,000	$ 14,489,000
Statutory deposit of certificates of deposit	$ 600,000	$ 600,000
Number of banks used to purchase statutory deposits	4	4

The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.8,17)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Name:	us-gaap_SecurityDeposit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant