The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26853-111562

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3179-108585

Name:	us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Mortgage-Backed Securities Narrative Tagging (Details)		12 Months Ended
Mortgage-Backed Securities Narrative Tagging (Details)	Jan. 31, 2016 USD ($) Integer	Dec. 31, 2016 USD ($)	Dec. 31, 2015	Dec. 31, 2014 USD ($)
Proceeds from Sale of Available-for-sale Securities		$ 9,295,000		$ 31,791,699
Available-for-sale Securities, Carrying Value, Mortgage-backed Securities		$ 0
Trust Portfolio M B S Bonds
Proceeds from Sale of Available-for-sale Securities	$ 15,000,000
Number of Available for Sale Securities, Held in a Trust \| Integer	3
LIFERS [Member] \| Trust Portfolio M B S Bonds
Available-for-Sale Securities, Ownership Percentage			100.00%