Quarterly report pursuant to Section 13 or 15(d)

Equity - Summary of Dividends Declared by Board of Directors (Detail)

v2.4.0.8
Equity - Summary of Dividends Declared by Board of Directors (Detail) (USD $)
9 Months Ended
Sep. 30, 2014
8/20/13 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Aug. 08, 2013
Record Date Aug. 20, 2013
Pay Date Aug. 29, 2013
Amount per share $ 0.06
11/18/13 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Nov. 07, 2013
Record Date Nov. 18, 2013
Pay Date Nov. 22, 2013
Amount per share $ 0.14
12/30/13 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Dec. 17, 2013
Record Date Dec. 30, 2013
Pay Date Jan. 10, 2014
Amount per share $ 0.22
03/27/14 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Mar. 13, 2014
Record Date Mar. 27, 2014
Pay Date Apr. 09, 2014
Amount per share $ 0.22
06/27/14 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Jun. 17, 2014
Record Date Jun. 27, 2014
Pay Date Jul. 10, 2014
Amount per share $ 0.22
9/26/2014 Record Date [Member]
 
Dividends Payable [Line Items]  
Announced Date Sep. 16, 2014
Record Date Sep. 26, 2014
Pay Date Oct. 09, 2014
Amount per share $ 0.22