XML 61 R8.htm IDEA: XBRL DOCUMENT v2.4.0.8
Consolidated Statements of Cash Flows (USD $)
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Cash flows from operating activities:      
Net income $ 73,573,000 $ 68,098,000 $ 69,869,000
Adjustments to reconcile net income to net cash provided by operations:      
Stock-based compensation expense 10,620,000 8,520,000 8,068,000
Depreciation of property, plant, and equipment 7,305,000 6,721,000 5,529,000
Amortization of intangible assets 3,797,000 4,137,000 4,227,000
Amortization of discounts or premiums on investments 2,519,000 5,735,000 6,383,000
Realized (gain) loss on sale of investments 403,000 (1,625,000) 181,000
Change in deferred income taxes 2,234,000 429,000 (425,000)
Tax effect of stock option exercises (7,658,000) (3,594,000) (4,045,000)
Changes in operating assets and liabilities:      
Accounts receivable (11,311,000) 5,035,000 (2,031,000)
Inventories 666,000 1,872,000 (5,743,000)
Accrued expenses 5,593,000 (1,974,000) 2,747,000
Accrued income taxes 7,968,000 3,363,000 (2,865,000)
Deferred revenue and customer deposits 3,228,000 (761,000) 3,316,000
Other (3,482,000) 5,175,000 1,064,000
Net cash provided by operating activities 95,455,000 101,131,000 86,275,000
Cash flows from investing activities:      
Purchases of investments (370,781,000) (460,486,000) (323,946,000)
Maturities and sales of investments 296,091,000 431,510,000 241,557,000
Purchases of property, plant, and equipment (9,630,000) (9,878,000) (7,820,000)
Cash paid for purchased technology (3,750,000)    
Net cash used in investing activities (88,070,000) (38,854,000) (90,209,000)
Cash flows from financing activities:      
Issuance of common stock under stock option plans 27,792,000 17,468,000 30,863,000
Payment of dividends 0 (66,213,000) (15,114,000)
Repurchase of common stock (47,908,000)   (10,000,000)
Tax effect of stock option exercises 7,658,000 3,594,000 4,045,000
Net cash provided by (used in) financing activities (12,458,000) (45,151,000) 9,794,000
Effect of foreign exchange rate changes on cash and cash equivalents 557,000 (10,069,000) (960,000)
Net change in cash and cash equivalents (4,516,000) 7,057,000 4,900,000
Cash and cash equivalents at beginning of year 45,160,000 38,103,000 33,203,000
Cash and cash equivalents at end of year $ 40,644,000 $ 45,160,000 $ 38,103,000