Property Plant and Equipment - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	1 Months Ended		1 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012 Regional Enterprises, Inc. Vehicle	Feb. 29, 2012 Regional Enterprises, Inc. Lease Agreements Vehicle	Feb. 17, 2012 Regional Enterprises, Inc. Lease Agreements	May 31, 2012 Regional Enterprises, Inc. Lease Agreements Transaction 01 Vehicle	Jun. 30, 2012 Regional Enterprises, Inc. Lease Agreements Transaction 01
Property, Plant and Equipment [Line Items]
Depreciation expense of property, plant and equipment	$ 147,000	$ 165,000	$ 297,000	$ 330,000
Number of tractors sold						6		21
Proceeds From Sale of Tractors						97,000		410,000
Amount of security deposit provided from the sale of tractors						90,000	90,000
Proceeds from the sale of tractors utilize for working capital requirements									177,000
Restricted cash	$ 233,000		$ 233,000						$ 233,000
Number of tractors leased					21	20
Number of tractors owned					5