Represents the percentage of cash value of the bonds as collateral on performance bonds.

No definition available.

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- Definition

Represents the period of time that unearned amounts are expected to be earned by the entity.

+ References

No definition available.

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- Definition

Represents the warranty period from the original invoice date on all products, materials and workmanship generally provided by the entity.

+ References

No definition available.

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No definition available.

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No definition available.

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 958
-SubTopic 225
-Section 45
-Paragraph 11
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=51659069&loc=d3e92212-112881

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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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-URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 8
-Article 5

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

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The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

+ References

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 210.5-02.1)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Description of Business and Summary of Significant Accounting Policies (Details) - USD ($)	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016
Prepaid Expenses and Other Current Assets
Prepaid expenses and other current assets	$ 1,872,000		$ 1,505,000
Cash designated as collateral on performance bonds	$ 540,000
Percentage of cash value of the bonds as collateral	100.00%
Goodwill and Long-Lived Assets
Impairment of long-lived and intangible assets	$ 0	$ 0
Maximum
Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts
Expected period for unearned amounts to be earned	12 months
Warranty
Warranty period	3 years
Maximum \| Property and equipment
Property and Equipment
Useful life	8 years
Minimum
Warranty
Warranty period	1 year
Minimum \| Property and equipment
Property and Equipment
Useful life	3 years