|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Accumulated |
|
|
|
|
|
|
|
Additional |
|
|
|
|
|
|
|
|
Other |
|
|
|
|
Common |
|
Paid-in |
|
Treasury |
|
Unearned |
|
Retained |
|
Comprehensive |
|
|
|
|
|
Stock (1) |
|
Capital |
|
Stock |
|
Compensation |
|
Earnings |
|
Income (Loss) |
|
Total |
| Balance, December 31,
2003 |
$ |
280,111 |
|
$ |
334,865,204 |
|
$ |
(7,558,093) |
|
$ |
- |
|
$ |
70,073,384 |
|
$ |
(269,342) |
|
$ |
397,391,264 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Stock issued
for benefit plans |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(46,150 shares) |
|
- |
|
|
166,298 |
|
|
661,848 |
|
|
- |
|
|
- |
|
|
- |
|
|
828,146 |
| Stock options
exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(509,105 shares) |
|
5,091 |
|
|
4,260,882 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
4,265,973 |
| Tax benefits
from exercise of stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
options |
|
- |
|
|
1,956,555 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
1,956,555 |
| Employee stock
purchase plan |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(50,418 shares) |
|
504 |
|
|
502,097 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
502,601 |
| Grants of
restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(100,900 shares) |
|
- |
|
|
1,785,262 |
|
|
- |
|
|
(1,785,262) |
|
|
- |
|
|
- |
|
|
- |
| Amortization
of restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
compensation |
|
- |
|
|
- |
|
|
- |
|
|
56,677 |
|
|
- |
|
|
- |
|
|
56,677 |
| Comprehensive income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
68,450,917 |
|
|
- |
|
|
68,450,917 |
| Change in fair
value of |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
other comprehensive income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
720,007 |
|
|
720,007 |
| Total
comprehensive income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
69,170,924 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
| Balance, December 31,
2004 |
$ |
285,706 |
|
$ |
343,536,298 |
|
$ |
(6,896,245) |
|
$ |
(1,728,585) |
|
$ |
138,524,301 |
|
$ |
450,665 |
|
$ |
474,172,140 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
| Stock issued
for benefit plans |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(31,424 shares) |
|
- |
|
|
435,134 |
|
|
450,659 |
|
|
- |
|
|
- |
|
|
- |
|
|
885,793 |
| Stock options
exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(840,847 shares) |
|
8,409 |
|
|
9,804,555 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
9,812,964 |
| Tax benefits
from exercise of stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
options |
|
- |
|
|
4,366,236 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
4,366,236 |
| Employee stock
purchase plan |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(32,495 shares) |
|
325 |
|
|
642,354 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
642,679 |
| Issuance of
restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(15,000 shares) |
|
150 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
150 |
| Grants of
restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(158,500 shares) |
|
- |
|
|
6,668,608 |
|
|
- |
|
|
(6,072,008) |
|
|
- |
|
|
- |
|
|
596,600 |
| Forfeitures of
restricted stock |
|
- |
|
|
(367,490) |
|
|
- |
|
|
367,490 |
|
|
- |
|
|
- |
|
|
- |
| Amortization
of restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
compensation |
|
- |
|
|
- |
|
|
- |
|
|
1,583,283 |
|
|
- |
|
|
- |
|
|
1,583,283 |
| Comprehensive income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
115,778,456 |
|
|
- |
|
|
115,778,456 |
| Change in fair
value of |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
other comprehensive loss |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
(520,134) |
|
|
(520,134) |
| Total
comprehensive income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
115,258,322 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
| Balance, December 31,
2005 |
$ |
294,590 |
|
$ |
365,085,695 |
|
$ |
(6,445,586) |
|
$ |
(5,849,820) |
|
$ |
254,302,757 |
|
$ |
(69,469) |
|
$ |
607,318,167 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
Stock issued for benefit plans |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(22,358 shares) |
|
- |
|
|
714,049 |
|
|
320,642 |
|
|
- |
|
|
- |
|
|
- |
|
|
1,034,691 |
|
Stock options exercised |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(652,829 shares) |
|
6,528 |
|
|
11,830,763 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
11,837,291 |
|
Adoption of SFAS No. 123R |
|
- |
|
|
(5,875,280) |
|
|
- |
|
|
5,849,820 |
|
|
- |
|
|
- |
|
|
(25,460) |
|
Excess tax benefits from stock- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
based awards |
|
- |
|
|
4,811,362 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
4,811,362 |
|
Employee stock purchase plan |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(22,425 shares) |
|
224 |
|
|
671,106 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
671,330 |
|
Issuance of restricted stock |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(35,776 shares) |
|
358 |
|
|
(358) |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
Amortization of stock
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
compensation |
|
- |
|
|
10,318,460 |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
10,318,460 |
|
Comprehensive income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Net
income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
161,565,340 |
|
|
- |
|
|
161,565,340 |
| Other
comprehensive income |
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
- |
|
|
385,791 |
|
|
385,791 |
| Total
comprehensive income |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
161,951,131 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
Balance, December 31, 2006 |
$ |
301,700 |
|
$ |
387,555,797 |
|
$ |
(6,124,944) |
|
$ |
- |
|
$ |
415,868,097 |
|
$ |
316,322 |
|
$ |
797,916,972 |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
|
---------- |
|
(1)$.01 par value. |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|