New accounting standards Debt Issuance Costs (Details) - Accounting Standards Update 2015-03 [Member] - Restatement adjustment [Member] - USD ($)	Dec. 31, 2015	Jun. 30, 2015
Prepayments and other current assets [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclass of debt issuance costs, current	$ 100,000	$ 100,000
Other [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclass of debt issuance costs, non-current	$ 6,000,000	$ 5,400,000

Disclosure related to a new accounting pronouncement or a change in accounting principle, including the nature and reason for the change and the effect of the change on prior periods and the current period.

No definition available.

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