Stock-Based Compensation - Summary (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 383	$ 458	$ 812	$ 753
Stock-based Awards Payable in Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 0	$ 0	$ 0	$ 0
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number granted (shares)	15	6	28	13
Grant date fair value (USD per share)	$ 13.08	$ 23.00	$ 14.14	$ 19.63
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number granted (shares)	0	0	2	61
Grant date fair value (USD per share)	$ 0	$ 0	$ 18.29	$ 16.00
Performance-based stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number granted (shares)	0	0	0	30
Grant date fair value (USD per share)	$ 0	$ 0	$ 0	$ 16.00

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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