Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands |
Common Stock |
Additional Paid-in-Capital |
Accumulated Other Comprehensive Income |
Treasury Stock |
Accumulated Deficit |
Total |
| Balance at Dec. 31, 2017 |
$ 2,291
|
$ 1,250,899
|
$ 2,194
|
$ (3,102)
|
$ (1,178,636)
|
$ 73,646
|
| Balance (in shares) at Dec. 31, 2017 |
229,073,517
|
|
|
587,151
|
|
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
| Net loss attributable to the Company |
|
|
|
|
(19,835)
|
(19,835)
|
| Other comprehensive loss |
|
|
412
|
|
|
412
|
| Stock-based compensation |
|
2,005
|
|
|
|
2,005
|
| Stock-based compensation (in shares) |
21,292
|
|
|
|
|
|
| Stock dividend |
|
13
|
|
|
(13)
|
|
| Stock dividend (in shares) |
6,721
|
|
|
|
|
|
| Stock option exercises |
$ 1
|
49
|
|
|
|
50
|
| Stock option exercises (in shares) |
91,001
|
|
|
|
|
|
| Equity component of convertible senior notes, net of issuance costs and income tax benefit |
|
34,829
|
|
|
|
34,829
|
| Purchase of capped call |
|
(16,000)
|
|
|
|
(16,000)
|
| Purchase of common stock forward |
|
|
|
$ (27,500)
|
|
(27,500)
|
| Purchase of common stock forward (in shares) |
|
|
|
14,397,906
|
|
|
| Exercise of warrants (in shares) |
100
|
|
|
|
|
|
| Provision for common stock warrants |
|
1,885
|
|
|
|
1,885
|
| Balance at Mar. 31, 2018 |
$ 2,292
|
1,273,680
|
2,606
|
$ (30,602)
|
(1,198,484)
|
49,492
|
| Balance (in shares) at Mar. 31, 2018 |
229,192,631
|
|
|
14,985,057
|
|
|
| Balance at Dec. 31, 2018 |
$ 2,342
|
1,289,714
|
1,584
|
$ (30,637)
|
(1,260,290)
|
$ 2,713
|
| Balance (in shares) at Dec. 31, 2018 |
234,160,661
|
|
|
15,002,663
|
|
234,160,661
|
| Increase (Decrease) in Stockholders' Equity |
|
|
|
|
|
|
| Net loss attributable to the Company |
|
|
|
|
(33,938)
|
$ (33,938)
|
| Other comprehensive loss |
|
|
(210)
|
|
|
(210)
|
| Stock-based compensation |
$ 3
|
2,494
|
|
|
|
2,497
|
| Stock-based compensation (in shares) |
324,073
|
|
|
|
|
|
| Stock dividend |
|
13
|
|
|
(13)
|
|
| Stock dividend (in shares) |
5,034
|
|
|
|
|
|
| Issuance of common stock, net |
$ 100
|
23,398
|
|
|
|
$ 23,498
|
| Issuance of common stock, net (in shares) |
10,000,000
|
|
|
|
|
10,000,000
|
| Stock option exercises |
|
81
|
|
|
|
$ 81
|
| Stock option exercises (in shares) |
47,467
|
|
|
|
|
|
| Provision for common stock warrants |
|
4,179
|
|
|
|
4,179
|
| Balance at Mar. 31, 2019 |
$ 2,445
|
$ 1,319,879
|
$ 1,374
|
$ (30,637)
|
$ (1,294,241)
|
$ (1,180)
|
| Balance (in shares) at Mar. 31, 2019 |
244,537,235
|
|
|
15,002,663
|
|
244,537,235
|