Quarterly report pursuant to Section 13 or 15(d)

Restructuring Activities (Details Textuals)

v3.10.0.1
Restructuring Activities (Details Textuals) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Restructuring charges $ 1,865 $ 6,546 $ 1,865 $ 6,546
Operating Leases, Rent Expense, Sublease Rentals 600 500 900 1,000
Stock Based Compensation [Member]        
Restructuring charges   4,400   4,400
Employee Severance, Excluding Share-based Compensation [Member]        
Restructuring charges   $ 1,600   $ 1,600
Lease Related Impairment [Member]        
Restructuring charges $ 700   $ 700