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Consolidated Balance Sheets (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Current Assets    
Cash and cash equivalents $ 109,119 $ 105,504
Short-term investments 31,290 3,246
Accounts receivable, less allowance for doubtful accounts of $82 and $128 at March 31, 2019 and December 31, 2018, respectively 99,032 99,385
Other receivables 34,583 36,699
Inventory, net 93,609 99,848
Prepaid expenses and other current assets 9,683 10,744
Total Current Assets 377,316 355,426
Property, plant and equipment, net 79,505 80,635
Deferred tax assets, net 36,891 37,187
Goodwill 6,982 7,106
Intangibles, net 31,817 33,183
Other assets 14,885 5,668
Long-term investments 85,227 108,822
Total Assets 632,623 628,027
Current Liabilities    
Accounts payable 60,116 60,054
Bonds payable 25,600 1,000
Unearned revenue 15,230 17,940
Accrued expenses 14,039 11,746
Accrued wages and benefits 15,105 14,752
Income tax payable, net 11,785 12,518
Total Current Liabilities 141,875 118,010
Non-current unearned revenue 4,514 5,296
Other non-current liabilities 42,687 33,842
Bonds payable   24,600
Total Liabilities 189,076 181,748
Commitments and contingencies (see Note 17)
Stockholders’ Equity    
Common stock, par value $0.01 per share; 200,000 shares authorized; 79,652 shares issued and 47,777 shares outstanding at March 31, 2019 and 79,652 shares issued and 47,751 shares outstanding at December 31, 2018 797 797
Additional paid-in capital 269,529 267,670
Accumulated other comprehensive loss (14,885) (14,416)
Retained earnings 879,180 883,975
Less treasury stock at cost: 31,875 and 31,901 shares at March 31, 2019 and December 31, 2018, respectively (691,074) (691,747)
Total Stockholders’ Equity 443,547 446,279
Total Liabilities and Stockholders’ Equity $ 632,623 $ 628,027