Annual report pursuant to Section 13 and 15(d)

PARENT COMPANY FINANCIAL INFORMATION (Condensed Balance Sheets Parenthetical) (Detail)

v3.6.0.2
PARENT COMPANY FINANCIAL INFORMATION (Condensed Balance Sheets Parenthetical) (Detail) - USD ($)
$ / shares in Units, $ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Common Stock Par Or Stated Value Per Share $ 0.001 $ 0.001
Common Stock Shares Authorized 100,000,000 100,000,000
Common Stock, Shares, Issued 52,636,896 51,945,396
Common Stock, Shares, Outstanding 52,636,896 51,945,396
Parent Company [Member]    
Common Stock Par Or Stated Value Per Share $ 0.001 $ 0.001
Common Stock Shares Authorized 100,000,000 100,000,000
Common Stock, Shares, Issued 52,636,896 51,945,396
Common Stock, Shares, Outstanding 52,636,896 51,945,396
Series A Preferred Stock [Member]    
Preferred Stock, Par Or Stated Value Per Share $ 0.001 $ 0.001
Preferred Stock, Liquidation Preference, Value $ 1,000 $ 1,000
Preferred Stock Shares Authorized 0 40,000
Preferred Stock, Shares Issued 0 0
Preferred Stock Shares Outstanding 0 0
Series A Preferred Stock [Member] | Parent Company [Member]    
Preferred Stock, Par Or Stated Value Per Share $ 0.001 $ 0.001
Preferred Stock, Liquidation Preference, Value $ 1,000 $ 1,000
Preferred Stock Shares Authorized 0 40,000
Preferred Stock, Shares Issued 0 0
Preferred Stock Shares Outstanding 0 0
Undesignated Preferred Stock [Member] | Parent Company [Member]    
Preferred Stock, Par Or Stated Value Per Share $ 0.001 $ 0.001
Preferred Stock Shares Authorized 1,000,000 1,000,000
Preferred Stock Shares Undesignated 1,000,000 960,000