Notes and Bonds Payable (Details) (Term Loan [Member], Term Loan Due 2019 [Member], USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Feb. 28, 2014 Lender
Debt Instrument [Line Items]
Debt face amount		$ 200.0
Number of Lenders Term Loan		9
Debt Instrument, Basis Spread on Variable Rate	1.45%
Minimum
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Maximum
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.95%

Face (par) amount of debt instrument at time of issuance.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 55

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400

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