CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Mar. 31, 2017
ASSETS
Cash and cash equivalents	$ 37,438	$ 33,736
Short-term investments	12,203	16,199
Accounts receivable, net	5,352	6,349
Inventories	8,474	9,211
Prepaid expenses and other current assets	2,410	2,777
Total current assets	65,877	68,272
Property and equipment, net	7,595	7,689
Long-term investments	14,596	12,898
Goodwill	7,978	7,978
Intangible assets, net	3,146	3,302
Other assets	1,900	2,456
Total assets	101,092	102,595
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	1,924	1,627
Accrued expenses and other liabilities	5,478	7,051
Deferred revenue	2,157	1,796
Total current liabilities	9,559	10,474
Income taxes payable	249	244
Deferred income taxes	22	15
Other accrued expenses	5,615	5,418
Total liabilities	15,445	16,151
Commitments and contingencies (Note 7)
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: 21,074,247 and 20,612,757 shares, respectively	21	21
Additional paid-in capital	24,879	21,830
Accumulated other comprehensive loss	(61)	(62)
Retained earnings	60,808	64,655
Total stockholders' equity	85,647	86,444
Total liabilities and stockholders' equity	$ 101,092	$ 102,595