CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 61,069	$ 48,231
Short-term marketable securities	179,640	163,822
Accounts receivable, net	50,178	42,821
Inventories	32,053	26,740
Prepaid expenses and other current assets	10,479	6,778
Total current assets	333,419	288,392
Long-term marketable securities	18,240	1,000
Property and equipment, net	60,909	23,184
Goodwill	30,562	33,003
In-process research and development	14,257	15,396
Long-term deferred tax assets, net	39,007	58,534
Other assets	4,570	4,422
Total assets	500,964	423,931
Current liabilities:
Accounts payable	14,558	9,381
Accrued expenses	34,539	28,382
Deferred revenue	9,004	8,778
Current portion of capital lease obligation	770
Total current liabilities	58,871	46,541
Other long-term liabilities	17	220
Contingent consideration	8,175	7,563
Long-term deferred tax liabilities	771	832
Capital lease obligation, net of current portion	15,750
Total liabilities	83,584	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 - 45,081,996 shares at December 31, 2016 and 43,973,119 shares at March 31, 2016 Outstanding - 43,507,808 shares at December 31, 2016 and 42,596,228 shares at March 31, 2016	435	426
Additional paid in capital	546,796	508,624
Accumulated deficit	(61,858)	(99,075)
Treasury stock at cost - 1,574,188 shares at December 31, 2016 and 1,376,891 shares at March 31, 2016	(46,556)	(26,660)
Accumulated other comprehensive loss	(21,437)	(14,540)
Total stockholders' equity	417,380	368,775
Total liabilities and stockholders' equity	$ 500,964	$ 423,931