Derivative Instruments and Hedging Activities (Details Textual) - Mar. 31, 2015 - USD ($) $ in Millions	Total
Interest Rate Cap One [Member]
Derivatives, Fair Value [Line Items]
Derivative, Maturity Date	Jan. 22, 2016
Derivative, Cap Interest Rate	2.50%
Interest Rate Cap [Member]
Derivatives, Fair Value [Line Items]
Derivative, Maturity Date	Jul. 22, 2015
Derivative Liability, Notional Amount	$ 275
Derivative, Cap Interest Rate	2.50%

Nominal or face amount used to calculate payments on the derivative liability.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5579245-113959

Name:	us-gaap_DerivativeLiabilityNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant