Long-term Debt, Line of Credit and Derivatives - Provisions of the revolving line of credit and accordion (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	May. 06, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2016	Aug. 05, 2015
Debt Instrument [Line Items]
Repayments of debt		$ 11,688,000	$ 4,017,000
Borrowings from Credit Facility		22,000,000	$ 0
Revolving Credit Facility
Debt Instrument [Line Items]
Fair value of amount outstanding		16,000,000
Line of credit facility, remaining borrowing capacity		32,900,000
Repayments of debt		10,000,000
Revolving Credit Facility | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					$ 50,000,000
Minimum additional borrowing amount					1,000,000
Amount over minimum additional borrowing amount, integral multiples					250,000
Revolving Credit Facility | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					20,000,000
Letters of credit outstanding, amount		1,100,000
Revolving Credit Facility | Bridge Loan
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity					5,000,000
Minimum additional borrowing amount					250,000
Amount over minimum additional borrowing amount, integral multiples					$ 50,000
Term Loan | Line of Credit
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		135,000,000
Fair value of amount outstanding		$ 104,900,000
Term Loan | Line of Credit | London Interbank Offered Rate (LIBOR)
Debt Instrument [Line Items]
Interest rate, effective percentage		3.50%
Scenario, Forecast | Revolving Credit Facility
Debt Instrument [Line Items]
Borrowings from Credit Facility				$ 10,000,000
Subsequent Event | Revolving Credit Facility
Debt Instrument [Line Items]
Repayments of debt	$ 2,000,000
Subsequent Event | Term Loan | Line of Credit
Debt Instrument [Line Items]
Repayments of debt	$ 1,600,000