Consolidated Balance Sheets (Parenthetical) - USD ($)	6 Months Ended	12 Months Ended
Sep. 30, 2017	Mar. 31, 2017
Unamortized debt issuance expense	$ 4,165,000	$ 5,340,000
Preferred stock, shares authorized (shares)	15,000,000	15,000,000
Secured Debt
Unamortized debt issuance expense	$ 2,430,000	$ 2,701,000
Series A preferred stock
Preferred stock, shares authorized (shares)	20	20
Preferred stock, dividend rate (percentage)	10.00%	10.00%
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares issued (shares)	7	7
Preferred stock, shares outstanding (shares)	7	7
Preferred stock, liquidation preference	$ 3,648	$ 3,648
Class A common stock
Common stock, shares authorized (shares)	25,000,000	25,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares issued (shares)	13,745,471	11,841,983
Common stock, shares outstanding (shares)	13,745,471	11,841,983
Class B common stock
Common stock, shares authorized (shares)	0	1,241,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares issued (shares)	0	0
Common stock, shares outstanding (shares)	0	0

Face amount or stated value per share of common stock.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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