CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Mar. 31, 2018
ASSETS
Cash and cash equivalents	$ 36,426	$ 40,241
Short-term investments	16,166	18,124
Accounts receivable, net	6,847	5,279
Inventories	5,141	5,547
Prepaid expenses and other current assets	2,114	2,080
Total current assets	66,694	71,271
Property and equipment, net	9,332	8,172
Long-term investments	11,921	7,923
Goodwill	7,978	7,978
Intangible assets, net	2,911	2,989
Other assets	1,201	1,207
Total assets	100,037	99,540
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	2,267	1,841
Accrued expenses and other liabilities	5,187	5,563
Total current liabilities	7,454	7,404
Income taxes payable	619	619
Other accrued expenses	4,760	4,702
Total liabilities	12,833	12,725
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: 21,760,094 and 21,407,247 shares, respectively	22	21
Additional paid-in capital	29,435	27,391
Accumulated other comprehensive loss	(152)	(142)
Retained earnings	57,899	59,545
Total stockholders' equity	87,204	86,815
Total liabilities and stockholders' equity	$ 100,037	$ 99,540

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.