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Waltham Lease (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Jun. 30, 2015
Real Estate Properties [Line Items]    
Property, plant and equipment, net $ 493,163 $ 467,511
Waltham Lease [Member]    
Real Estate Properties [Line Items]    
Property, plant and equipment, net 120,168 104,315
Other Liabilities $ 122,801 $ 104,315