Summary of Significant Accounting Policies (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statement of Cash Flows [Abstract]
Depreciation and amortization									$ 1,762	$ 1,999	$ 2,767
Provision for excess and obsolete inventories									606	356	636
Other long-term assets, net									(329)	(650)	(30)
All other operating activities, net										4,472	1,285
Net cash provided by operating activities									3,544	6,177	4,658
Additions to property and equipment									(1,949)	(1,309)	(1,181)
All other investing activities, net										0	2,750
Net cash provided by (used in) investing activities									(1,285)	(1,309)	1,569
Consolidated Balance Sheets [Abstract]
Property, plant and equipment, net	$ 2,448				$ 2,168				2,448	2,168
Losses on foreign currency transactions									(626)	(257)	(348)
Provision for excess and obsolescence of inventory	28				33				28	33	245
Summary Of Significant Accounting Policies [Line Items]
Provision for excess and obsolescence of spare parts inventory	578				323				$ 578	$ 323	$ 391
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Antidilutive securities excluded from earnings per share (in shares)									181,579	110,635	232,437
Net income (loss)	$ (945)	$ 784	$ (571)	$ 387	$ 15,600	$ 1,082	$ 1,089	$ 734	$ (345)	$ 18,505	$ 4,248
Basic weighted average number of shares outstanding (in shares)									9,067,697	8,910,907	8,735,544
Diluted weighted average number of shares outstanding (in shares)									9,067,697	9,085,592	8,909,792
Basic EPS (in dollars per share)	$ (0.10)	$ 0.09	$ (0.06)	$ 0.04	$ 1.75	$ 0.12	$ 0.12	$ 0.08	$ (0.04)	$ 2.08	$ 0.49
Diluted EPS (in dollars per share)	$ (0.10)	$ 0.09	$ (0.06)	$ 0.04	$ 1.72	$ 0.12	$ 0.12	$ 0.08	$ (0.04)	$ 2.04	$ 0.48
Fair Value By Asset Class [Line Items]
Cash and cash equivalents	$ 25,451				$ 28,074				$ 25,451	$ 28,074	$ 27,927	$ 29,613
As Previously Reported [Member]
Consolidated Statement of Cash Flows [Abstract]
Depreciation and amortization										2,322	3,158
Provision for excess and obsolete inventories										33	245
Other long-term assets, net										(59)	236
All other operating activities, net										4,472	1,285
Net cash provided by operating activities										6,768	4,924
Additions to property and equipment										(1,900)	(1,447)
All other investing activities, net										0	2,750
Net cash provided by (used in) investing activities										(1,900)	1,303
Adjustments [Member]
Consolidated Statement of Cash Flows [Abstract]
Depreciation and amortization										(323)	(391)
Provision for excess and obsolete inventories										323	391
Other long-term assets, net										(591)	(266)
All other operating activities, net										0	0
Net cash provided by operating activities										(591)	(266)
Additions to property and equipment										591	266
All other investing activities, net										0	0
Net cash provided by (used in) investing activities										591	$ 266
Consolidated Balance Sheets [Abstract]
Property, plant and equipment, net					913					913
Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of assets									1 year
Post-installation warranty service life of system									3 years
Maintenance period									1 year
Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Useful lives of assets									5 years
Post-installation warranty service life of system									5 years
Maintenance period									3 years
Recurring Basis [Member]
Fair Value By Asset Class [Line Items]
Cash	15,406				18,037				$ 15,406	18,037
Money market funds	10,045				10,037				10,045	10,037
Cash and cash equivalents	25,451				28,074				25,451	28,074
Recurring Basis [Member] | Quoted Prices in Active Markets (Level 1) [Member]
Fair Value By Asset Class [Line Items]
Cash	15,406				18,037				15,406	18,037
Money market funds	10,045				10,037				10,045	10,037
Cash and cash equivalents	25,451				28,074				25,451	28,074
Recurring Basis [Member] | Observable Inputs (Level 2) [Member]
Fair Value By Asset Class [Line Items]
Cash	0				0				0	0
Money market funds	0				0				0	0
Cash and cash equivalents	0				0				0	0
Recurring Basis [Member] | Unobservable Inputs (Level 3) [Member]
Fair Value By Asset Class [Line Items]
Cash	0				0				0	0
Money market funds	0				0				0	0
Cash and cash equivalents	$ 0				$ 0				$ 0	$ 0
Employee Stock Option [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities (in shares)									0	13,634	65
Restricted Stock [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Effect of dilutive securities (in shares)									0	161,051	174,183