Subsequent Events (Details) - Senior Secured Credit Facility - Subsequent Event $ in Millions	Jul. 28, 2016 USD ($)
Subsequent Event
Conditional maximum borrowing capacity	$ 175.0
Amendment
Subsequent Event
Maximum borrowing capacity	165.0
Conditional maximum borrowing capacity	200.0
Amendment \| Extended Commitments, period from June 6, 2017 to July 28, 2019
Subsequent Event
Maximum borrowing capacity	$ 150.0

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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