CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Mar. 31, 2019
ASSETS
Cash and cash equivalents	$ 45,724	$ 42,495
Short-term investments	22,352	19,346
Accounts receivable, net	7,488	7,339
Inventories	5,045	5,685
Prepaid expenses and other current assets	3,235	2,500
Total current assets	83,844	77,365
Property and equipment, net	8,478	9,001
Operating lease right-of-use assets	913
Long-term investments	4,788	8,997
Goodwill	7,978	7,978
Intangible assets, net	2,606	2,722
Other assets	160	160
Total assets	108,767	106,223
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,924	1,864
Lease liabilities, current	620
Accrued expenses and other liabilities	5,733	6,869
Total current liabilities	8,277	8,733
Income taxes payable	626	622
Lease liabilities, non-current	329
Contingent consideration, non-current	3,766	3,713
Total liabilities	12,998	13,068
Commitments and contingencies (Note 9)
Stockholders' equity:
Preferred stock: $0.001 par value authorized: 5,000,000 shares; issued and outstanding: none
Common Stock: $0.001 par value authorized: 150,000,000 shares; issued and outstanding: 23,052,473 and 22,320,156 shares, respectively	23	22
Additional paid-in capital	37,903	33,462
Accumulated other comprehensive income (loss)	28	(37)
Retained earnings	57,815	59,708
Total stockholders' equity	95,769	93,155
Total liabilities and stockholders' equity	$ 108,767	$ 106,223