Commitments - Bend Lease Base Rent (Details) - Bend Lease	Jun. 30, 2018 USD ($)
Loss Contingencies [Line Items]
Month of Term Under Bend Lease, 1 to 12	$ 4,004
Month of Term Under Bend Lease, 13 to 24	4,124
Month of Term Under Bend Lease, 25 to 36	$ 4,248

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration