XML 100 R86.htm IDEA: XBRL DOCUMENT v3.8.0.1
Other Income/Expenses and Adjustments - Summary of Employee Benefits Expenses (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure Of Other Operating Income Expense [Line Items]      
Total employee benefits expenses $ 30,072 $ 28,574 $ 27,961
Included in cost of sales [Member]      
Disclosure Of Other Operating Income Expense [Line Items]      
Wages and salaries 13,474 13,047 12,575
Labor and health insurance costs 168 146 151
Pension costs 869 854 854
Other employment benefits 817 623 691
Included in selling expenses [Member]      
Disclosure Of Other Operating Income Expense [Line Items]      
Wages and salaries 3,641 3,604 3,381
Labor and health insurance costs 14 13 14
Pension costs 325 327 291
Other employment benefits 64 52 37
Included in general and administrative expenses [Member]      
Disclosure Of Other Operating Income Expense [Line Items]      
Wages and salaries 8,364 7,696 8,140
Labor and health insurance costs 219 215 247
Pension costs 656 646 578
Director fees 342 937 745
Other employment benefits $ 1,119 $ 414 $ 257