Interest Rate Derivative Agreements Narrative Tagging (Details)	6 Months Ended
	Jun. 30, 2017 USD ($)
Barclays Bank PLC 3 [Member]
Derivative [Line Items]
Derivative, Purchase Date	2017-06
Derivative, variable debt financing facility hedged	M31 TEBS
Fixed Interest Rate	1.50%
Derivative, purchase price	$ 139,000
Barclays Bank PLC 4 [Member]
Derivative [Line Items]
Derivative, Purchase Date	2017-06
Derivative, variable debt financing facility hedged	M33 TEBS
Fixed Interest Rate	1.50%
Derivative, purchase price	$ 358,000