4. Commitments and Contingencies (Details Narrative) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]
Retention bonus obligations	$ 2,111,000	$ 2,907,000

Amounts owed to vendors and subcontractors that have been withheld because of retainage provisions in a contract.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 910

-SubTopic 405

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6471548&loc=d3e50610-109371

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