The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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Summary of Significant Accounting Policies - Intangibles and Goodwill (Details) - USD ($)	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Impairment of finite-lived intangible assets	$ 0	$ 0
Carrying value of intangible assets	8,328,000	2,562,000
Accumulated amortization of intangible assets	1,762,000	1,155,000
Amortization of intangible assets	607,000	459,000	$ 326,000
Amortization expense, next twelve months	1,324,000
Amortization expense, year two	1,324,000
Amortization expense, year three	1,320,000
Amortization expense, year four	1,279,000
Amortization expense, year five	1,279,000
Goodwill	$ 3,943,000	$ 3,943,000
Goodwill impairment				$ 0
Customer Relationships \| Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	7 years
Customer Relationships \| Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset useful life	10 years