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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Current Assets    
Cash and cash equivalents $ 105,504 $ 86,433
Short-term investments 3,246 16,129
Accounts receivable, less allowance for doubtful accounts of $128 and $— at December 31, 2018 and 2017, respectively 99,385 144,150
Other receivables 36,699 26,578
Inventory, net 99,848 122,542
Prepaid expenses and other current assets 10,744 17,282
Total Current Assets 355,426 413,114
Property, plant and equipment, net 80,635 85,079
Deferred tax assets, net 37,187 23,428
Goodwill 7,106 3,492
Intangibles, net 33,183 4,661
Other assets 5,668 9,064
Long-term investments 108,822 130,256
Total Assets 628,027 669,094
Current Liabilities    
Accounts payable 61,054 60,632
Unearned revenue 17,940 13,070
Accrued expenses 11,746 13,232
Accrued wages and benefits 14,752 15,948
Income tax payable, net 12,518 3,936
Total Current Liabilities 118,010 106,818
Non-current unearned revenue 5,296 4,556
Other non-current liabilities 33,842 34,209
Bonds payable 24,600 25,600
Total Liabilities 181,748 171,183
Commitments and contingencies (see Note 15)
Stockholders' Equity    
Common stock, par value $0.01 per share; 200,000 shares authorized; 79,652 shares issued and 47,751 shares outstanding at December 31, 2018 and 79,652 shares issued and 48,485 shares outstanding at December 31, 2017 797 797
Additional paid-in capital 267,670 260,515
Accumulated other comprehensive loss (14,416) (3,295)
Retained earnings 883,975 922,178
Less treasury stock at cost: 31,901 and 31,167 shares at December 31, 2018 and 2017, respectively (691,747) (682,284)
Total Stockholders' Equity 446,279 497,911
Total Liabilities and Stockholders' Equity $ 628,027 $ 669,094