XML 88 R72.htm IDEA: XBRL DOCUMENT v3.3.1.900
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Feb. 29, 2016
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Income Tax Disclosure [Abstract]        
Uncertain tax benefits that, if recognized, would affect effective tax rate   $ 3,100 $ 2,100  
Recognized interest and penalties expense (benefit) related to unrecognized tax benefits   365 286 $ 76
Accrued interest and penalties   $ 1,000 $ 499  
Subsequent Event        
Subsequent Event [Line Items]        
Proceeds from refund of overpaid federal tax $ 120,000