Summary of Significant Accounting Policies - Revision of Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Consolidated Balance Sheet:
Current deferred income tax asset		$ 2,260
Prepaid expenses and deposits	$ 5,266	6,301
Total current assets	35,546	43,112
Long-term deferred income tax asset		1,023
Total assets	45,249	50,855
Income tax payable	215	3,284
Total current liabilities	23,355	30,628
Total liabilities	30,722	40,206
Additional paid-in capital	121,599	119,242
Accumulated deficit	(106,992)	(108,600)
Accumulated other comprehensive income (loss)	(94)	(7)
Total stockholders’ equity	14,527	10,649	$ 1,806	$ 2,333
Total liabilities and stockholders' equity	$ 45,249	50,855
As Reported
Consolidated Balance Sheet:
Current deferred income tax asset		2,776
Prepaid expenses and deposits		5,082
Total current assets		42,409
Long-term deferred income tax asset		1,130
Total assets		50,259
Income tax payable		1,206
Total current liabilities		28,550
Total liabilities		38,128
Additional paid-in capital		120,150
Accumulated deficit		(108,076)
Accumulated other comprehensive income (loss)		43
Total stockholders’ equity		12,131	3,325	3,990
Total liabilities and stockholders' equity		50,259
Adjustments
Consolidated Balance Sheet:
Current deferred income tax asset		(516)
Prepaid expenses and deposits		1,219
Total current assets		703
Long-term deferred income tax asset		(107)
Total assets		596
Income tax payable		2,078
Total current liabilities		2,078
Total liabilities		2,078
Additional paid-in capital		(908)
Accumulated deficit		(524)
Accumulated other comprehensive income (loss)		(50)
Total stockholders’ equity		(1,482)	$ (1,519)	$ (1,657)
Total liabilities and stockholders' equity		$ 596