Valuation and Qualifying Accounts

12 Months Ended

Mar. 31, 2017

Valuation and Qualifying Accounts [Abstract]

Valuation and Qualifying Accounts

(3) Valuation and Qualifying Accounts

Activity in the Company's valuation and qualifying accounts consists of the following (in thousands):

	Year Ended March 31,
	2017			2016			2015
Allowance for doubtful accounts:
Balance at beginning of period	$	13		$	8		$	7
Provision for doubtful accounts		421			260			94
Write-off of uncollectible accounts receivable		(407	)		(255	)		(93	)
Balance at end of year	$	27		$	13		$	8