XML 75 R61.htm IDEA: XBRL DOCUMENT v3.8.0.1
Income Taxes - Unrecognized Tax Benefit (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Gross unrecognized tax benefits at beginning of year $ 2,665 $ 5,011 $ 7,024
Increases in tax positions for prior years 16 22 859
Decreases in tax positions for prior years (390) (1,684) (96)
Increases in tax positions for current years 0 336 0
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions (54) 0 0
Decreases from lapse in statute of limitations (1,149) (1,020) (2,776)
Gross unrecognized tax benefits at end of year $ 1,088 $ 2,665 $ 5,011