XML 49 R38.htm IDEA: XBRL DOCUMENT v3.10.0.1
Restructuring Expenses - Additional Information (Details)
$ in Millions
6 Months Ended
Aug. 18, 2014
USD ($)
May 22, 2014
USD ($)
Jun. 30, 2018
Lease
Property Subject to Operating Lease [Member]      
Restructuring Cost And Reserve [Line Items]      
Number of sub leases | Lease     2
Sub-lease 1 [Member] | Facility Closing [Member]      
Restructuring Cost And Reserve [Line Items]      
Restructuring reserve charges   $ 0.9  
Sub Lease 2 [Member] | Facility Closing [Member]      
Restructuring Cost And Reserve [Line Items]      
Restructuring reserve charges $ 0.7