CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands |
12 Months Ended |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Cash Flows From Operating Activities: |
|
|
|
| Net Income |
$ 28,925
|
$ 27,808
|
$ 26,582
|
| Adjustments to reconcile net income to net cash provided by operating activities: |
|
|
|
| Depreciation and amortization |
8,823
|
8,723
|
8,592
|
| Deferred income taxes |
(1,431)
|
2
|
(923)
|
| Stock-based compensation |
1,841
|
2,209
|
1,586
|
| Impairment of investment |
2,413
|
0
|
0
|
| Net change in accrued interest, premiums, and discounts on investments |
100
|
340
|
556
|
| Other |
17
|
29
|
30
|
| Net Cash Provided By Used In Operating Activities Before Changes In Operating Capital, Total |
40,688
|
39,111
|
36,423
|
| Changes in operating assets and liabilities: |
|
|
|
| Accounts receivable |
371
|
(2,798)
|
(1,110)
|
| Inventories |
(1,749)
|
(1,756)
|
(2,487)
|
| Prepaid expenses and other current assets |
1,786
|
(3,117)
|
1,507
|
| Other non-current assets |
(103)
|
(22)
|
(17)
|
| Accounts payable and accrued liabilities |
(492)
|
968
|
1,768
|
| Accrued income and other taxes |
(128)
|
(396)
|
388
|
| Other non-current liabilities |
54
|
(767)
|
104
|
| Net Cash Provided by (Used in) Operating Activities, Total |
40,427
|
31,223
|
36,576
|
| Cash Flows From Investing Activities: |
|
|
|
| Property, plant and equipment additions |
(9,323)
|
(12,671)
|
(7,503)
|
| Purchase of patents |
0
|
0
|
(2,150)
|
| Purchase of investments |
(168)
|
(33,115)
|
0
|
| Proceeds from maturities of investments |
13,400
|
35,975
|
7,639
|
| Net Cash Provided by (Used in) Investing Activities, Total |
3,909
|
(9,811)
|
(2,014)
|
| Cash Flows From Financing Activities: |
|
|
|
| Shares tendered for employees' withholding taxes on stock-based compensation |
(154)
|
(376)
|
0
|
| Tax benefit related to stock-based compensation |
156
|
168
|
15
|
| Purchase of treasury stock |
(30,698)
|
(23,556)
|
(9,196)
|
| Dividends paid |
(6,069)
|
(5,432)
|
(4,821)
|
| Net Cash Provided by (Used in) Financing Activities, Total |
(36,765)
|
(29,196)
|
(14,002)
|
| Net change in cash and cash equivalents |
7,571
|
(7,784)
|
20,560
|
| Cash and cash equivalents, beginning of year |
20,775
|
28,559
|
7,999
|
| Cash and cash equivalents, end of year |
28,346
|
20,775
|
28,559
|
| Cash paid for: |
|
|
|
| Income taxes |
$ 12,900
|
$ 17,475
|
$ 8,036
|