Restructuring and Exit costs (Narrative) (Details) - Restructuring Plan ft² in Thousands, $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($) ft²	Sep. 30, 2015 USD ($)	Mar. 31, 2016 USD ($)
Restructuring Cost and Reserve [Line Items]
Expected restructuring charge	$ 3,800		$ 3,800
Employee severance costs paid	650	$ 118	768
Amount of liability	1,542	2,222	1,542
Total charges related to restructuring plan	149	$ 2,340
Restructuring and exit costs
Restructuring Cost and Reserve [Line Items]
Total charges related to restructuring plan	56		2,300
Cost of goods sold
Restructuring Cost and Reserve [Line Items]
Accelerated equipment depreciation expense	125		310
Scenario, Forecast
Restructuring Cost and Reserve [Line Items]
Employee severance costs paid				$ 2,200
Facility Closing
Restructuring Cost and Reserve [Line Items]
Expected restructuring charge	2,100		2,100
Square feet of manufacturing facility | ft²		60
Amount of liability		$ 1,200
Facility Closing | Other Current Liabilities
Restructuring Cost and Reserve [Line Items]
Amount of liability	277		277
Employee Severance Costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charge	1,200		1,200
Employee severance costs paid	650	118
Amount of liability	420	1,014	420
Employee severance costs	56		1,100
Total charges related to restructuring plan	149	1,132
Employee Severance Costs | Accrued Employee Compensation
Restructuring Cost and Reserve [Line Items]
Amount of liability	419		419
Accelerated Depreciation
Restructuring Cost and Reserve [Line Items]
Expected restructuring charge	375		375
Relocation costs
Restructuring Cost and Reserve [Line Items]
Expected restructuring charge	125		125
Lease Obligation Costs
Restructuring Cost and Reserve [Line Items]
Employee severance costs paid	0	0
Amount of liability	1,122	1,208	1,122
Total charges related to restructuring plan	0	$ 1,208
Lease Obligation Costs | Other Long Term Liabilities
Restructuring Cost and Reserve [Line Items]
Amount of liability	$ 845		$ 845