Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Cash flows - operating activities:      
Net income $ 17,132 $ 6,797 $ 6,347
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 13,696 15,312 16,275
Deferred income taxes (1,166) 237 (3,749)
Stock-based compensation expense 5,066 3,579 3,747
Accretion expense related to earnout payments 1,294 1,854 2,082
Cash paid for restructuring charges 0 (142) (999)
Changes in assets and liabilities, net of effects of acquisitions:      
Accounts receivables (8,714) 217 (3,161)
Accounts payable 810 (2,113) (504)
Accrued expenses 37,207 29,979 12,888
Deferred revenue (236) 3,486 2,735
Income taxes (payable) recoverable, net (3,257) 1,482 4,292
Retirement and pension plan assets and liabilities (1,142) 4,477 1,201
Prepaid expenses (4,388) (207) (625)
Other assets and liabilities, net 1,281 (8,194) 3,504
Net cash provided by operating activities 57,583 56,764 44,033
Cash flows - investing activities:      
Restricted cash 0 (53) 26
Acquisition of business and earnout payments, net of cash acquired (10,312) 0 (1,023)
Capital expenditures (16,427) (3,359) (3,731)
Purchases of available for sale investments (1,526) (963) (749)
Proceeds from sale of available for sale investments 758 1,084 252
Net cash used in investing activities (27,507) (3,291) (5,225)
Cash flows - financing activities:      
Proceeds from debt issuance 0 0 40,000
Debt repayment (29,500) (6,000) (4,500)
Debt issuance costs (473) 0 0
Cash dividends paid (9,991) (9,864) (7,260)
Payment of employee tax withholdings on equity transactions (878) (406) (713)
Acquisition earnout payments (5,496) (3,390) (357)
Net cash (used in) provided by financing activities (46,338) (19,660) 27,170
Effect of exchange rates fluctuations on cash and cash equivalents (4,638) (4,107) (1,937)
Net (decrease) increase in cash and cash equivalents (20,900) 29,706 64,041
Cash and cash equivalents at beginning of period 211,352 181,646 117,605
Cash and cash equivalents at end of period 190,452 211,352 181,646
Supplemental Schedule of Non-cash Financing Activities:      
Term loan facility retirement 26,500 0 0
Subsequent drawing on line of credit 26,500 0 0
Cash paid for      
Gross income taxes 16,936 14,175 6,650
Interest $ 442 $ 861 $ 879