Operating Segments, by external customers and long lived assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 172,994	$ 200,708
Long-lived assets	461,728		466,101
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	148,330	156,580
Long-lived assets	324,921		328,326
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	11,037	28,158
Long-lived assets	95,473		95,591
Argentina [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	10,696	13,488
Long-lived assets	23,928		24,344
Poland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,892	2,364
Long-lived assets	869		885
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	39	118
Long-lived assets	$ 16,537		$ 16,955