XML 20 R8.htm IDEA: XBRL DOCUMENT v3.8.0.1
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Cash flows from operating activities      
Net income $ 23,840 $ 35,229 $ 18,646
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 15,692 14,407 14,245
Amortization of net premium on available-for-sale investments 425 643 2,402
Net realized gain on long-term investments (4,685) (5,923) (10,337)
Net (gain) loss on disposal of property, plant and equipment (145) 22 644
Gain on bargain purchase of a business   (3,542)  
Stock-based compensation expense 7,433 6,695 6,712
Deferred income taxes 14,073 (2,685) (692)
Tax impact of stock option exercises     (40)
Change in operating assets and liabilities:      
Accounts receivable, net (49,103) (21,302) 14,918
Other receivables (10,222) 4,101 11,704
Inventory (15,518) (10,887) (6,877)
Prepaid expenses and other assets (4,830) (7,108) (5,070)
Accounts payable (17,742) 26,722 (5,826)
Accrued expenses and other liabilities (5,455) 8,792 (10,289)
Income taxes payable 3,858 (3,162) (11,590)
Net cash provided by (used in) operating activities (42,379) 42,002 18,550
Cash flows from investing activities      
Purchases of property, plant and equipment (14,720) (21,441) (11,753)
Proceeds from disposals of property, plant and equipment 151   183
Proceeds from sales and maturities of available-for-sale investments 173,752 225,075 280,435
Purchases of available-for-sale investments (93,141) (209,172) (188,921)
Acquisition of business   (943)  
Net cash provided by (used in) investing activities 66,042 (6,481) 79,944
Cash flows from financing activities      
Proceeds from stock option exercises 13,412 4,717 961
Purchases of treasury stock (17,348) (25,817) (66,160)
Dividend payments (17,368) (17,583) (18,449)
Payments on long-term debt (1,100) (1,100) (1,100)
Net cash used in financing activities (22,404) (39,783) (84,748)
Net increase (decrease) in cash and cash equivalents 1,259 (4,262) 13,746
Effect of exchange rate changes 5,279 (393) (2,635)
Cash and cash equivalents, beginning of year 79,895 84,550 73,439
Cash and cash equivalents, end of year 86,433 79,895 84,550
Supplemental disclosure of cash flow information      
Cash paid during the year for interest 555 575 598
Cash paid during the year for income taxes 2,988 18,689 20,139
Supplemental disclosure of non-cash investing activities      
Purchases of property, plant and equipment included in accounts payable $ 408 $ 2,103 $ 598