Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013 Guarantee
Commitments and Contingencies [Line Items]
Number of Guarantees Outstanding	3
Base Building Improvements [Member]
Commitments and Contingencies [Line Items]
Obligation for tenant improvements	$ 2,297
Tenant Improvement [Member]
Commitments and Contingencies [Line Items]
Obligation for tenant improvements	234
Payment of the Base Building Improvement, Tenant Improvement Alloance, and Lease Commissions [Member]
Commitments and Contingencies [Line Items]
Obligation for tenant improvements	$ 2,114

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

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