Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 39,040	$ 48,231
Short-term marketable securities	190,908	163,822
Accounts receivable, net	54,055	42,821
Inventories	34,931	26,740
Prepaid expenses and other current assets	8,024	6,778
Total current assets	326,958	288,392
Long-term marketable securities	47,143	1,000
Property and equipment, net	87,777	23,184
Goodwill	31,045	33,003
In-process research and development	14,482	15,396
Long-term deferred tax assets, net	34,723	58,534
Other assets	8,286	4,422
Total assets	550,414	423,931
Current liabilities:
Accounts payable	20,620	9,381
Accrued expenses and other liabilities	37,703	28,382
Deferred revenue	10,495	8,778
Current portion of capital lease obligation	799
Total current liabilities	69,617	46,541
Other long-term liabilities	3,251	220
Contingent consideration	9,153	7,563
Long-term deferred tax liabilities	783	832
Capital lease obligation, net of current portion	15,539
Total liabilities	98,343	55,156
Commitments and contingencies (Note 11)
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 - 45,249,281 shares at March 31, 2017 and 43,973,119 shares at March 31, 2016; Outstanding - 43,673,286 shares at March 31, 2017 and 42,596,228 shares at March 31, 2016	437	426
Additional paid in capital	565,962	508,624
Accumulated deficit	(46,959)	(99,075)
Treasury stock at cost - 1,575,995 shares at March 31, 2017 and 1,376,891 shares at March 31, 2016	(46,763)	(26,660)
Accumulated other comprehensive loss	(20,606)	(14,540)
Total stockholders' equity	452,071	368,775
Total liabilities and stockholders' equity	$ 550,414	$ 423,931