Restructuring (Narrative) (Details) - USD ($)	3 Months Ended
	Mar. 31, 2018	Apr. 01, 2017	Jun. 30, 2017
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,029,000	$ 66,000
March 2015 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	300,000
Restructuring and related cost, cost incurred to date	20,500,000
September 2015 Reduction
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	$ (200,000)
Restructuring and related cost, cost incurred to date	7,200,000
June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,000,000
Restructuring and related cost, cost incurred to date	9,000,000
Minimum | June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	8,000,000
Maximum | June 2017 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring and related cost, expected cost	$ 12,000,000
Disposed of by Sale | Hyderabad
Restructuring Cost and Reserve [Line Items]
Ownership percentage			100.00%