CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Mar. 31, 2017
Current assets:
Cash and cash equivalents	$ 280,293	$ 301,970
Short-term investments	218,773	178,179
Accounts receivable, net	143,919	141,177
Inventory, net	64,574	55,456
Other current assets	19,460	22,195
Total current assets	727,019	698,977
Long-term investments	118,870	127,176
Property, plant, and equipment, net	144,802	150,307
Goodwill and purchased intangibles, net	15,498	15,577
Deferred tax assets	14,783	23,242
Other assets	1,681	1,880
Total assets	1,022,653	1,017,159
Current liabilities:
Accounts payable	45,685	42,885
Accrued liabilities	61,906	74,285
Total current liabilities	107,591	117,170
Long term debt, net of issuance costs	492,146	491,059
Long-term income taxes payable	74,476	11,729
Other long-term liabilities	19,419	15,045
Total liabilities	693,632	635,003
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock	814	804
Additional paid-in capital	858,253	818,777
Accumulated other comprehensive income	1,905	4,694
Retained earnings	294,200	319,931
Total stockholders' equity before treasury stock	1,155,172	1,144,206
Less: Treasury stock, at cost	(826,151)	(762,050)
Total stockholders' equity	329,021	382,156
Total liabilities and stockholders' equity	$ 1,022,653	$ 1,017,159