5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Sep. 30, 2016 USD ($) $ / shares shares
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Options Outstanding (in Shares) | shares	656
Options Outstanding, Weighted-average Remaining Contractual Life	2 years 208 days
Options Outstanding, Weighted-average Exercise Price	$ 2.13
Options Outstanding, Aggregate Intrinsic Value (in Dollars) | $	$ 1,628
Options Exercisable (in Shares) | shares	584
Options Exercisable, Weighted-average Remaining Contractual Life	2 years 149 days
Options Exercisable, Weighted-average Exercise Price	$ 2.20
Options Exercisable, Aggregate Intrinsic Value (in Dollars) | $	$ 1,417
Options Exercise Price $1.01 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 1.01
Options Outstanding (in Shares) | shares	79
Options Outstanding, Weighted-average Remaining Contractual Life	1 year 127 days
Options Outstanding, Weighted-average Exercise Price	$ 1.01
Options Exercisable (in Shares) | shares	79
Options Exercisable, Weighted-average Remaining Contractual Life	1 year 127 days
Options Exercisable, Weighted-average Exercise Price	$ 1.01
Options Exercise Price $1.10 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 1.10
Options Outstanding (in Shares) | shares	50
Options Outstanding, Weighted-average Remaining Contractual Life	1 year 6 months
Options Outstanding, Weighted-average Exercise Price	$ 1.10
Options Exercisable (in Shares) | shares	50
Options Exercisable, Weighted-average Remaining Contractual Life	1 year 6 months
Options Exercisable, Weighted-average Exercise Price	$ 1.10
Options Exercise Price $1.21 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 1.21
Options Outstanding (in Shares) | shares	50
Options Outstanding, Weighted-average Remaining Contractual Life	1 year 6 months
Options Outstanding, Weighted-average Exercise Price	$ 1.21
Options Exercisable (in Shares) | shares	50
Options Exercisable, Weighted-average Remaining Contractual Life	1 year 6 months
Options Exercisable, Weighted-average Exercise Price	$ 1.21
Options Exercise Price $1.55 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 1.55
Options Outstanding (in Shares) | shares	212
Options Outstanding, Weighted-average Remaining Contractual Life	3 years 321 days
Options Outstanding, Weighted-average Exercise Price	$ 1.55
Options Exercisable (in Shares) | shares	140
Options Exercisable, Weighted-average Remaining Contractual Life	3 years 321 days
Options Exercisable, Weighted-average Exercise Price	$ 1.55
Options Exercise Price $2.20 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 2.20
Options Outstanding (in Shares) | shares	162
Options Outstanding, Weighted-average Remaining Contractual Life	1 year 361 days
Options Outstanding, Weighted-average Exercise Price	$ 2.20
Options Exercisable (in Shares) | shares	162
Options Exercisable, Weighted-average Remaining Contractual Life	1 year 361 days
Options Exercisable, Weighted-average Exercise Price	$ 2.20
Options Exercise Price $2.42 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 2.42
Options Outstanding (in Shares) | shares	10
Options Outstanding, Weighted-average Remaining Contractual Life	2 years 7 days
Options Outstanding, Weighted-average Exercise Price	$ 2.42
Options Exercisable (in Shares) | shares	10
Options Exercisable, Weighted-average Remaining Contractual Life	2 years 7 days
Options Exercisable, Weighted-average Exercise Price	$ 2.42
Options Exercise Price $5.31 [Member]
5. Equity Compensation Plans (Details) - Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Line Items]
Exercise Price	$ 5.31
Options Outstanding (in Shares) | shares	93
Options Outstanding, Weighted-average Remaining Contractual Life	2 years 310 days
Options Outstanding, Weighted-average Exercise Price	$ 5.31
Options Exercisable (in Shares) | shares	93
Options Exercisable, Weighted-average Remaining Contractual Life	2 years 310 days
Options Exercisable, Weighted-average Exercise Price	$ 5.31