Summary of Significant Accounting Policies - Revision of Statements of Stockholders' Equity (Details) - USD ($) shares in Thousands, $ in Thousands	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	$ 10,649	$ 1,806	$ 2,333
Ending balances	$ 14,527	$ 10,649	$ 1,806
Common Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances, shares	14,028	13,958	14,601
Beginning balances	$ 14	$ 14	$ 15
Ending balances, shares	14,232	14,028	13,958
Ending balances	$ 14	$ 14	$ 14
Additional Paid-In Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	119,242	116,749	114,423
Ending balances	121,599	119,242	116,749
Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(108,600)	(114,706)	(111,989)
Ending balances	(106,992)	(108,600)	(114,706)
Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(7)	(251)	(116)
Ending balances	(94)	(7)	(251)
As Reported
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	$ 12,131	3,325	3,990
Ending balances		$ 12,131	$ 3,325
As Reported | Common Stock
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances, shares	14,028	13,958	14,601
Beginning balances	$ 14	$ 14	$ 15
Ending balances, shares		14,028	13,958
Ending balances		$ 14	$ 14
As Reported | Additional Paid-In Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	120,150	117,657	115,331
Ending balances		120,150	117,657
As Reported | Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(108,076)	(114,095)	(111,240)
Ending balances		(108,076)	(114,095)
As Reported | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	43	(251)	(116)
Ending balances		43	(251)
Adjustments
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(1,482)	(1,519)	(1,657)
Ending balances		(1,482)	(1,519)
Adjustments | Additional Paid-In Capital
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(908)	(908)	(908)
Ending balances		(908)	(908)
Adjustments | Accumulated Deficit
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	(524)	(611)	(749)
Ending balances		(524)	$ (611)
Adjustments | Accumulated Other Comprehensive Income (Loss)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Beginning balances	$ (50)
Ending balances		$ (50)