Federal and State Income Taxes - Effective Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
U.S. federal statutory income tax	35.00%	35.00%	35.00%
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ (220)	$ 10,708	$ 7,278
State income taxes, net of federal benefit	(63.00%)	3.70%	5.10%
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	$ 396	$ 1,123	$ 1,066
Foreign income taxes	4.20%	0.30%	(0.20%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount	$ (26)	$ 93	$ (50)
Recognition of uncertain tax positions	(50.70%)	0.70%	(0.10%)
Effective Income Tax Rate Reconciliation, Tax Settlement, Amount	$ 319	$ 220	$ (24)
Non-deductible expenses	(106.10%)	0.10%	2.40%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount	$ 667	$ 45	$ 517
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Percent	196.70%	(3.30%)	(0.20%)
Effective Income Tax Rate Reconciliation, Tax Credit, Research, Amount	$ (569)	$ 0	$ 0
Domestic production activities deduction	90.40%	0.00%	0.00%
Effective Income Tax Rate Reconciliation, Expiration Of Capital Loss, Amount	$ (1,237)	$ (1,009)	$ (45)
Effective income tax	106.50%	36.50%	42.00%
Effective Income Tax Rate Reconciliation, Deduction, Amount	$ (670)	$ 11,180	$ 8,742