Restructuring (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 8,100
Accrued restructuring costs expected to be paid within one year	8,200
Accrued restructuring costs expected to be paid in year two	1,700
Severance and outplacement costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense	$ 9,200
Machine Clothing [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense			$ 1,100
AEC assets [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring expense		$ 5,200