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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
ASSETS    
Cash and cash equivalents $ 119,944 $ 118,817
Debt Securities, Available-for-sale, Current 240,976 254,890
Accounts receivable, net of allowances of $3,924 and $3,963, respectively 118,561 116,676
Inventories 114,758 108,409
Prepaid expenses and other current assets 16,943 11,166
Notes, Loans and Financing Receivable, Gross, Current 3,333 1,667
Income taxes receivable 18,709 8,717
Total current assets 633,224 620,342
Property and equipment, net of accumulated depreciation of $204,760 and $191,760, respectively 154,342 143,167
Debt Securities, Available-for-sale, Noncurrent 155,859 56,133
Note receivable 26,667 28,333
Intangible assets, net 74,973 78,659
Goodwill 123,750 123,890
Other assets 7,202 7,947
Deferred income taxes 17,816 20,031
Total assets 1,193,833 1,078,502
LIABILITIES AND EQUITY    
Accounts payable 20,727 25,039
Accrued expenses 47,978 52,594
Income taxes payable 2,979 3,274
Business acquisition liabilities 6,507 11,411
Deferred Revenue, Current 2,089 755
Total current liabilities 80,280 93,073
Business acquisition liabilities, net of current portion 3,815 4,508
Deferred income taxes 9,991 10,669
Other liabilities 2,561 2,474
Total liabilities 96,647 110,724
Commitments and contingencies (Note 13)
Equity:    
Additional paid-in capital 283,132 238,341
Accumulated other comprehensive loss (6,807) (6,907)
Retained earnings 820,763 736,247
Total equity 1,097,186 967,778
Total liabilities and equity 1,193,833 1,078,502
Class A Common    
Equity:    
Common stock 74 73
Class B Common    
Equity:    
Common stock $ 24 $ 24