XML 83 R61.htm IDEA: XBRL DOCUMENT v3.6.0.2
Equity (Details 4) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Proceeds from stock options exercised, excluding cashless exercise of $0.7 million, $0.5 million and $0.6 million in 2016, 2015 and 2014, respectively $ 1,579 $ 653 $ 953
Tax benefits 400 260 670
Intrinsic value of stock options exercised $ 1,860 $ 1,137 $ 2,733