Annual report pursuant to Section 13 and 15(d)

Retirement Plan (Details Textual)

v3.8.0.1
Retirement Plan (Details Textual) - Supplemental Employee Retirement Plan [Member] - USD ($)
$ in Millions
5 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2016
Jul. 19, 2016
Dec. 31, 2017
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay     100.00%
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent     4.00%
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 0.7 $ 0.8 $ 1.8