CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Current assets:
Cash and cash equivalents	$ 301,970	$ 235,266
Short-term investments	178,179	160,051
Accounts receivable, net	141,177	128,219
Inventory, net	55,456	53,162
Other current assets	22,195	20,297
Total current assets	698,977	596,995
Long-term investments	127,176	145,623
Property, plant, and equipment, net	150,307	149,735
Goodwill and purchased intangibles, net	15,577	15,827
Deferred tax and other assets	25,122	25,257
Total assets	1,017,159	933,437
Current liabilities:
Accounts payable	42,885	39,133
Accrued liabilities	74,285	68,302
Total current liabilities	117,170	107,435
Long term debt, net of issuance costs	491,059	489,609
Long-term income taxes payable	11,729	11,968
Other long-term liabilities	15,045	12,026
Total liabilities	635,003	621,038
Commitments and contingencies (Note 8)
Stockholders' equity:
Preferred stock, $0.01 par value per share; 1,000 shares authorized, no shares outstanding	0	0
Common stock, $0.01 par value per share; 100,000 shares authorized, 47,028 shares and 48,088 shares issued at 2016 and 2017, respectively	804	793
Additional paid-in capital	818,777	769,489
Accumulated other comprehensive income	4,694	3,759
Retained earnings	319,931	257,291
Total stockholders' equity before treasury stock	1,144,206	1,031,332
Less: Treasury stock (common: 13,709 shares and 14,672 shares at 2016 and 2017, respectively) at cost	(762,050)	(718,933)
Total stockholders' equity	382,156	312,399
Total liabilities and stockholders' equity	$ 1,017,159	$ 933,437