Acquisitions and Related Goodwill - Additional Information (Details) - USD ($)	Sep. 25, 2017	Sep. 30, 2017	Mar. 31, 2017
Business Acquisition [Line Items]
Goodwill allocated		$ 1,711,000	$ 0
Infinia Technology Corporation (ITC)
Business Acquisition [Line Items]
Consideration transferred, excluding contingent consideration	$ 3,800,000
Business combination, cash paid	$ 100,000
Business combination, stock issued (in shares)	884,890
Par value per share (in dollars per share)	$ 0.01
Fair value per acquiree share (in dollars per share)	$ 4.02
Resale registration statement, filing period, minimum	10 days
Period for Make Whole Payment	90 days
Issuance of contingent consideration	$ 600,000
Intangible assets assumed	3,400,000
Working capital	200,000
Deferred tax liabilities	1,100,000
Business combination, fair value	4,200,000
Acquisition cost expensed (less than)	100,000
Goodwill allocated	$ 1,700,000