XML 103 R81.htm IDEA: XBRL DOCUMENT v3.3.1.900
Share-Based Compensation - Schedule of Deferred Stock Units to be Settled in Shares (Detail) - $ / shares
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]    
Beginning balance of Outstanding Shares 116,952  
Granted, Shares 2,928 116,952
Vested, Shares [1] (19,492)  
Forfeited, Shares (9,746)  
Ending balance of Outstanding Shares 90,642 116,952
Beginning balance of Weighted Average Grant-Date Fair Value Per Unit $ 4.39  
Granted, Weighted Average Grant-Date Fair Value Per Unit 5.73 $ 4.39
Vested, Weighted Average Grant-Date Fair Value Per Unit [1] 4.39  
Forfeited, Weighted Average Grant-Date Fair Value Per Unit 4.39  
Ending balance of Weighted Average Grant-Date Fair Value Per Unit $ 4.43 $ 4.39
[1] The total vested awards exclude 0.3 thousand of vested but unreleased awards. These awards are included in total outstanding awards until they are released under the terms of the agreement.