CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Current assets:
Cash and cash equivalents	$ 88,323	$ 107,015
Short-term investments	41,474	26,109
Receivables (net of allowances of $479 in 2016 and $247 in 2015)	35,148	29,015
Inventories	35,131	36,179
Prepaid expenses and other current assets	6,351	2,893
Net deferred tax assets, current	4,810	6,575
Current assets of discontinued operations	961	2,075
Total current assets	212,198	209,861
Long-term investments	22,458	24,181
Investment in unconsolidated affiliate	2,705	2,683
Property and equipment, net	26,842	27,316
Intangible assets, net	1,324	1,491
Net deferred tax assets, non-current	3,903	3,413
Non-current assets of discontinued operations	0	12
Other assets	1,950	107
Total assets	271,380	269,064
Current liabilities:
Accounts payable	7,292	7,277
Accrued payroll and related expenses	8,349	11,094
Accrued taxes	1,145	4,829
Current liabilities of discontinued operations	112	5,536
Other accrued liabilities	9,393	9,804
Deferred revenue	1,600	1,322
Warranty reserve	1,281	1,423
Total current liabilities	29,172	41,285
Non-current liabilities:
Deferred revenue	2,274	3,219
Warranty reserve	1,927	1,733
Net deferred tax liabilities	384	310
Notes payable, less current portion	379	480
Other non-current liabilities	932	1,843
Total non-current liabilities	5,896	7,585
Total liabilities	$ 35,068	$ 48,870
Commitments and contingencies (Note 13)
Shareholders' equity:
Preferred stock, no par value: 5,000,000 shares authorized; no shares issued and outstanding in 2016 and 2015	$ 0	$ 0
Common stock, no par value: 35,000,000 shares authorized; 22,408,000 and 22,539,000 shares issued and outstanding in 2016 and 2015, respectively	127,016	132,559
Retained earnings	109,303	87,643
Accumulated other comprehensive loss	(7)	(8)
Total shareholders' equity	236,312	220,194
Total liabilities and shareholders' equity	$ 271,380	$ 269,064