Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Changes in Stockholders' Equity (Detail)

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Stockholders' Equity - Summary of Changes in Stockholders' Equity (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Beginning balance     $ 183,146  
Issuance of senior common stock and common stock, net     40,335  
Distributions declared to common, senior common and preferred stockholders     (22,219)  
Net loss 229 309 (12,066) 1,194
Ending balance 189,196   189,196  
Senior Common Stock [Member]
        
Beginning balance         
Issuance of senior common stock and common stock, net     1  
Distributions declared to common, senior common and preferred stockholders         
Net loss         
Ending balance 1   1  
Preferred Stock [Member]
        
Beginning balance     2  
Issuance of senior common stock and common stock, net         
Distributions declared to common, senior common and preferred stockholders         
Net loss         
Ending balance 2   2  
Common Stock [Member]
        
Beginning balance     16  
Issuance of senior common stock and common stock, net     2  
Distributions declared to common, senior common and preferred stockholders         
Net loss         
Ending balance 18   18  
Additional Paid in Capital [Member]
        
Beginning balance     298,751  
Issuance of senior common stock and common stock, net     40,332  
Distributions declared to common, senior common and preferred stockholders         
Net loss         
Ending balance 339,083   339,083  
Notes Receivable from Employees [Member]
        
Beginning balance     (375)  
Issuance of senior common stock and common stock, net         
Distributions declared to common, senior common and preferred stockholders         
Net loss         
Ending balance (375)   (375)  
Distributions in Excess of Accumulated Earnings [Member]
        
Beginning balance     (115,248)  
Issuance of senior common stock and common stock, net         
Distributions declared to common, senior common and preferred stockholders     (22,219)  
Net loss     (12,066)  
Ending balance $ (149,533)   $ (149,533)