CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Mar. 31, 2019
ASSETS
Cash and cash equivalents	$ 46,435	$ 42,495
Short-term investments	18,282	19,346
Accounts receivable, net	7,375	7,339
Inventories	5,463	5,685
Prepaid expenses and other current assets	3,009	2,500
Total current assets	80,564	77,365
Property and equipment, net	8,726	9,001
Operating lease right-of-use assets	910
Long-term investments	7,264	8,997
Goodwill	7,978	7,978
Intangible assets, net	2,664	2,722
Other assets	160	160
Total assets	108,266	106,223
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,676	1,864
Lease liabilities, current	559
Accrued expenses and other liabilities	5,205	6,869
Total current liabilities	7,440	8,733
Income taxes payable	624	622
Lease liabilities, non-current	380
Contingent consideration, non-current	3,740	3,713
Total liabilities	12,184	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: 22,898,188 and 22,320,156 shares, respectively	23	22
Additional paid-in capital	36,462	33,462
Accumulated other comprehensive income (loss)	14	(37)
Retained earnings	59,583	59,708
Total stockholders' equity	96,082	93,155
Total liabilities and stockholders' equity	$ 108,266	$ 106,223