Debt Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014
Debt Instrument [Line Items]
Capital leases - long term	$ 6,365		$ 7,757
Current maturities of long-term debt	5,324		4,028
Capital leases - short term	4,640		$ 1,379
Line of Credit Facility, Current Borrowing Capacity	150,000
Line of Credit Facility, Maximum Borrowing Capacity	$ 250,000
Line of Credit Facility, Expiration Date	Jun. 04, 2015
Long-term Line of Credit	$ 0
Interest Paid	285	$ 299
Capital Expenditures Incurred but Not yet Paid	1,605	$ 5,337
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 5,324
Credit Facility Points Above Federal Funds Rate [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.50%
Credit Facility Points Above LIBOR [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Unsecured Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	1.00%
Debt Instrument, Issuance Date	Mar. 03, 2014
Debt Instrument, Unused Borrowing Capacity, Amount	$ 5,000
Debt Instrument, Maturity Date	Apr. 30, 2017
Unsecured Debt	$ 0