Fair Value Disclosures - Assets and Liabilities Carried on Balance Sheet by Caption (Detail) (Fair Value, Measurements, Nonrecurring [Member], USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying Value	$ 0
Property impairment write (up) down	0	142,747
Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying Value	0
Formerly owned, Vacant Phoenix, AZ Property [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying Value	0
Property impairment write (up) down	0	142,747
Formerly owned, Vacant Phoenix, AZ Property [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Carrying Value	$ 0