Annual report pursuant to Section 13 and 15(d)

Schedule of Cash Distributions Declared and Paid (Detail)

v2.4.0.8
Schedule of Cash Distributions Declared and Paid (Detail) (USD $)
In Thousands, except Per Share data, unless otherwise specified
0 Months Ended 1 Months Ended 12 Months Ended
Nov. 20, 2013
May 30, 2013
Mar. 31, 2013
Sep. 12, 2013
Mar. 07, 2012
Dec. 31, 2013
Dividends Payable [Line Items]            
Announcement Date Nov. 20, 2013 May 30, 2013   Sep. 12, 2013 Mar. 07, 2012 Mar. 18, 2013
Payment Date Dec. 27, 2013 Jun. 28, 2013 Apr. 01, 2013 Oct. 04, 2013    
Dividend Payment 1st
           
Dividends Payable [Line Items]            
Announcement Date           Nov. 20, 2013
Payment Date           Dec. 27, 2013
Amount Per Share           $ 0.0550
Cash Distributed           $ 1,376
Dividend Payment 2nd
           
Dividends Payable [Line Items]            
Announcement Date           Sep. 12, 2013
Payment Date           Oct. 04, 2013
Amount Per Share           $ 0.0525
Cash Distributed           1,308
Dividend Payment 3rd
           
Dividends Payable [Line Items]            
Announcement Date           May 30, 2013
Payment Date           Jun. 28, 2013
Amount Per Share           $ 0.0500
Cash Distributed           1,240
Dividend Payment 4th
           
Dividends Payable [Line Items]            
Announcement Date           Mar. 18, 2013
Payment Date           Apr. 01, 2013
Amount Per Share           $ 0.0500
Cash Distributed           1,234
Dividend Payment Five
           
Dividends Payable [Line Items]            
Announcement Date           Nov. 29, 2012
Payment Date           Dec. 28, 2012
Amount Per Share           $ 0.0350
Cash Distributed           854
Dividend Payment Six
           
Dividends Payable [Line Items]            
Announcement Date           Aug. 30, 2012
Payment Date           Sep. 28, 2012
Amount Per Share           $ 0.0350
Cash Distributed           854
Dividend Payment Seven
           
Dividends Payable [Line Items]            
Announcement Date           May 31, 2012
Payment Date           Jun. 21, 2012
Amount Per Share           $ 0.0350
Cash Distributed           854
Dividend Payment Eight
           
Dividends Payable [Line Items]            
Announcement Date           Mar. 07, 2012
Payment Date           Mar. 30, 2012
Amount Per Share           $ 0.0350
Cash Distributed           $ 850