Investment in Joint Ventures - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Apr. 19, 2013
Schedule of Equity Method Investments [Line Items]
Equity income from unconsolidated joint ventures	$ 2,039,000	$ 1,899,000	$ 1,948,000
Adjustment Depreciation	1,000,000	1,200,000	1,200,000
Distributions from equity unconsolidated joint ventures	1,311,000	1,839,000	1,841,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	11,583,000	8,420,000
Other Regions [Member] | ECHO Financing [Member]
Schedule of Equity Method Investments [Line Items]
Equity income from unconsolidated joint ventures	58,000	0	0
Economic Interest	50.00%
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	$ 2,685,000	$ 0		$ 1,000,000