XML 134 R119.htm IDEA: XBRL DOCUMENT v3.3.1.900
Retirement Plans - Schedule of Changes in Benefit Obligations and Plan Assets (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Service cost $ 0 $ 0 $ 0
Interest cost 62 62 62
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Funded Status at End of Year 1,815 1,822  
Unrecognized transition obligation 0 0  
Unrecognized net gain 15 117  
Amounts recognized in retained earnings 1,830 1,939  
Change in Benefit Obligation [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Benefit obligation at beginning of year 1,822 1,644  
Service cost 0 0  
Interest cost 62 62  
Amendments 0 0  
Actuarial gain 98 284  
Net benefits paid (167) (168)  
Benefit obligation at end of year 1,815 1,822 1,644
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Net benefits paid (167) (168)  
Change In Plan Assets [Member]      
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]      
Net benefits paid (167) (168)  
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]      
Fair value of plan assets at beginning of year 0 0  
Actual return on plan assets 0 0  
Employer contributions 167 168  
Net benefits paid (167) (168)  
Fair value of plan assets at end of year $ 0 $ 0 $ 0