CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Current assets:
Cash and cash equivalents	$ 81,571	$ 68,835
Restricted cash	6,809	6,193
Short-term investments, at fair value		24,533
Accounts receivable, net of allowances of $797 at March 31, 2016 and $333 at March 31, 2015	19,086	22,124
Unbilled costs and fees	2,250	1,848
Inventories	38,440	40,983
Prepaid expenses and other current assets	7,755	10,701
Deferred income taxes		2,486
Total current assets	155,911	177,703
Equipment and leasehold improvements, net	6,477	8,711
Restricted cash	437	208
Deferred income taxes	8,181	5,952
Other assets	223	534
Total assets	171,229	193,108
Current liabilities:
Accounts payable	5,327	7,200
Accrued salaries and benefits	4,565	6,769
Accrued warranty costs	174	159
Deferred revenue	8,700	7,355
Customer deposits	12,787	13,956
Other current liabilities	3,203	5,736
Total current liabilities	34,756	41,175
Deferred revenue	4,508	1,019
Other long term liabilities	842	507
Total liabilities	$ 40,106	$ 42,701
Commitments and contingencies (Notes 2 and 9)
Stockholders' equity:
Preferred stock, no par value Authorized-100,000 shares Issued-None
Common stock, $0.66 2/3 par value Authorized-20,000,000 shares Issued and outstanding- 7,137,081 shares at March 31, 2016 and 7,193,247 shares at March 31, 2015	$ 4,757	$ 4,795
Capital in excess of par value	1,772	3,334
Accumulated other comprehensive loss, net		(11)
Retained earnings	124,594	142,289
Total stockholders' equity	131,123	150,407
Total liabilities and stockholders' equity	$ 171,229	$ 193,108