CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 54,709	$ 48,231
Short-term marketable securities	178,236	163,822
Accounts receivable, net	46,607	42,821
Inventories	31,491	26,740
Prepaid expenses and other current assets	8,827	6,778
Total current assets	319,870	288,392
Long-term marketable securities	4,004	1,000
Property and equipment, net	50,207	23,184
Goodwill	32,582	33,003
In-process research and development	15,199	15,396
Long-term deferred tax assets, net	48,614	58,534
Other assets	4,422	4,422
Total assets	474,898	423,931
Current liabilities:
Accounts payable	14,066	9,381
Accrued expenses	28,013	28,382
Deferred revenue	9,103	8,778
Current portion of capital lease obligation	740
Total current liabilities	51,922	46,541
Other long-term liabilities	4	220
Contingent consideration	7,749	7,563
Long-term deferred tax liabilities	821	832
Capital lease obligation, net of current portion	15,961
Total liabilities	76,457	55,156
Commitments and contingencies (Note 9)
Stockholders' equity:
Class B Preferred Stock, $.01 par value Authorized - 1,000,000 shares; Issued and outstanding - none
Common stock, $.01 par value Authorized - 100,000,000 shares; Issued - 44,905,284 shares at September 30, 2016 and 43,973,119 shares at March 31, 2016 Outstanding - 43,333,607 shares at September 30, 2016 and 42,596,228 shares at March 31, 2016	433	426
Additional paid in capital	536,859	508,624
Accumulated deficit	(77,290)	(99,075)
Treasury stock at cost - 1,571,677 shares at September 30, 2016 and 1,376,891 shares at March 31, 2016	(46,266)	(26,660)
Accumulated other comprehensive loss	(15,295)	(14,540)
Total stockholders' equity	398,441	368,775
Total liabilities and stockholders' equity	$ 474,898	$ 423,931