Debt (Details) (USD $) In Thousands, unless otherwise specified			3 Months Ended
	Sep. 30, 2014 Revolving Credit Facility [Member]	Jun. 30, 2014 Revolving Credit Facility [Member]	Sep. 30, 2014 Minimum [Member] Revolving Credit Facility [Member]	Sep. 30, 2014 Maximum [Member] Revolving Credit Facility [Member]	Sep. 30, 2014 Prudential Facility [Domain]	Jul. 01, 2014 Prudential Facility [Domain]	Sep. 30, 2014 Prudential Facility - Series C [Member]	Sep. 30, 2014 State of Ohio Assumed Debt [Member]	Sep. 30, 2014 Term Loan [Member]	Jun. 30, 2014 Term Loan [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 150,000
Line of Credit Facility, Commitment Fee Percentage			0.09%	0.175%
Line of Credit Facility, Amount Outstanding	103,000	69,000
Letters of Credit Outstanding, Amount	8,900	8,700
Line of Credit Facility, Remaining Borrowing Capacity	38,100	72,300
Debt, Weighted Average Interest Rate	0.85%
Debt Instrument, Face Amount								2,400	100,000
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate						3.19%	3.19%	1.50%	1.06%
Long-term Debt					120,000	120,000		2,300	98,800	99,400
Debt Instrument, Unused Borrowing Capacity, Amount					$ 5,000