XML 114 R90.htm IDEA: XBRL DOCUMENT v3.3.1.900
Deferred tax reconciliation (Details 5) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]      
Change in net deferred income tax liability from the preceding table $ 5,460    
Deferred taxes associated with other comprehensive income (3,086)    
Other (2,073)    
Deferred income taxes $ 301 $ 58,990 $ 28,551