Annual report pursuant to Section 13 and 15(d)

Subsequent Event - Additional Information (Detail)

v2.4.0.8
Subsequent Event - Additional Information (Detail) (USD $)
12 Months Ended 1 Months Ended 1 Months Ended
Dec. 31, 2013
Dec. 31, 2013
Revolving Credit Facility [Member]
Jan. 31, 2014
Subsequent Event [Member]
Facility
sqft
Jan. 20, 2014
Subsequent Event [Member]
Feb. 28, 2014
Subsequent Event [Member]
March 31, 2014 and June 30, 2014 [Member]
Maximum [Member]
Feb. 28, 2014
Subsequent Event [Member]
March 31, 2014 and June 30, 2014 [Member]
Minimum [Member]
Feb. 28, 2014
Subsequent Event [Member]
September 30, 2014 through March 31, 2015 [Member]
Maximum [Member]
Feb. 28, 2014
Subsequent Event [Member]
September 30, 2014 through March 31, 2015 [Member]
Minimum [Member]
Feb. 28, 2014
Subsequent Event [Member]
Fiscal Quarter Subsequent to March 31, 2015 to Maturity [Member]
Maximum [Member]
Feb. 28, 2014
Subsequent Event [Member]
Fiscal Quarter Subsequent to March 31, 2015 to Maturity [Member]
Minimum [Member]
Feb. 28, 2014
Subsequent Event [Member]
Revolving Credit Facility [Member]
Subsequent Event [Line Items]                      
Number of facility purchased     2                
Total area of a facilities     233,000                
Purchase price of facilities     $ 14,500,000                
Additional Purchase consideration       53,000,000              
Total amount issued under revolving credit facility   20,000,000                 125,000,000
Revolving credit facility, maturity date                     Jun. 30, 2018
Financing fee incurred for acquisition 9,800,000                   58,000,000
Term of revolving credit facility                     5 years
Revolving credit facility amount remaining                     $ 56,100,000
Leverage ratio 2.68       4.00 1.00 3.75 1.00 3.50 1.00