Summary of Significant Accounting Policies and Procedures and Recent Accounting Pronouncements - Depreciation and Amortization (Details)	12 Months Ended
Dec. 31, 2017
Buildings \| Minimum
Depreciation and Amortization
Estimated useful life	25 years
Buildings \| Maximum
Depreciation and Amortization
Estimated useful life	35 years
Building improvements \| Minimum
Depreciation and Amortization
Estimated useful life	4 years
Building improvements \| Maximum
Depreciation and Amortization
Estimated useful life	20 years

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration