XML 78 R67.htm IDEA: XBRL DOCUMENT v3.8.0.1
Employee Benefit Plans (Detail Textuals) - Pension Benefits
$ in Millions
3 Months Ended
Mar. 31, 2018
USD ($)
Defined Benefit Plan Disclosure  
Percentage of employer match 3.00%
Defined benefit plan contributions by employer percent 6.00%
Contribution to defined benefit plan in the second quarter of 2018 $ 1.8
Defined benefit plan, minimum required contribution $ 1.0