CONSOLIDATED CONDENSED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands |
Total |
Preferred Stock |
Common Stock |
Preferred Stock |
Preferred Stock
Preferred Stock
|
Common Stock |
Common Stock
Common Stock
|
Treasury Stock |
Treasury Stock
Common Stock
|
Capital in Excess of Par Value |
Capital in Excess of Par Value
Preferred Stock
|
Capital in Excess of Par Value
Common Stock
|
Accumulated Deficit |
Accumulated Other Comprehensive Income (Loss) |
Stockholders' equity, beginning balance at Dec. 31, 2016 |
$ 339,135
|
|
|
$ 0
|
|
$ 1,394
|
|
$ (170)
|
|
$ 694,807
|
|
|
$ (350,052)
|
$ (6,844)
|
Shares outstanding, beginning balance at Dec. 31, 2016 |
8,341
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (402)
|
|
|
|
|
5
|
|
|
|
(407)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
31
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 1,332
|
|
|
|
|
|
|
|
|
1,332
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ 48,279
|
$ 24,060
|
|
$ 500
|
|
$ 133
|
|
$ 0
|
|
$ 47,779
|
$ 23,927
|
|
|
Stock issued during period (in shares) |
|
500
|
800
|
|
|
|
|
|
|
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(39,809)
|
|
|
|
|
|
|
|
|
|
|
|
(39,809)
|
|
Other comprehensive income (loss) |
846
|
|
|
|
|
|
|
|
|
|
|
|
|
846
|
Stockholders' equity, ending balance at Mar. 31, 2017 |
$ 373,441
|
|
|
500
|
|
1,532
|
|
(170)
|
|
767,438
|
|
|
(389,861)
|
(5,998)
|
Shares outstanding, ending balance at Mar. 31, 2017 |
9,672
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, beginning balance at Dec. 31, 2016 |
$ 339,135
|
|
|
0
|
|
1,394
|
|
(170)
|
|
694,807
|
|
|
(350,052)
|
(6,844)
|
Shares outstanding, beginning balance at Dec. 31, 2016 |
8,341
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
$ (90,008)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Other comprehensive income (loss) |
3,104
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, ending balance at Sep. 30, 2017 |
$ 324,556
|
|
|
500
|
|
1,546
|
|
(170)
|
|
766,480
|
|
|
(440,060)
|
(3,740)
|
Shares outstanding, ending balance at Sep. 30, 2017 |
9,760
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, beginning balance at Mar. 31, 2017 |
$ 373,441
|
|
|
500
|
|
1,532
|
|
(170)
|
|
767,438
|
|
|
(389,861)
|
(5,998)
|
Shares outstanding, beginning balance at Mar. 31, 2017 |
9,672
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (273)
|
|
|
|
|
7
|
|
|
|
(280)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
45
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 886
|
|
|
|
|
|
|
|
|
886
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ (2)
|
$ (1)
|
|
0
|
|
0
|
|
0
|
|
(2)
|
(1)
|
|
|
Stock issued during period (in shares) |
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Convertible preferred stock dividend |
(1,239)
|
|
|
|
|
|
|
|
|
(1,239)
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(29,888)
|
|
|
|
|
|
|
|
|
|
|
|
(29,888)
|
|
Other comprehensive income (loss) |
871
|
|
|
|
|
|
|
|
|
|
|
|
|
871
|
Stockholders' equity, ending balance at Jun. 30, 2017 |
$ 343,795
|
|
|
500
|
|
1,539
|
|
(170)
|
|
766,802
|
|
|
(419,749)
|
(5,127)
|
Shares outstanding, ending balance at Jun. 30, 2017 |
9,717
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (253)
|
|
|
|
|
7
|
|
|
|
(260)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
43
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 844
|
|
|
|
|
|
|
|
|
844
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ 0
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
0
|
0
|
|
|
Stock issued during period (in shares) |
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Convertible preferred stock dividend |
(906)
|
|
|
|
|
|
|
|
|
(906)
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(20,311)
|
|
|
|
|
|
|
|
|
|
|
|
(20,311)
|
|
Other comprehensive income (loss) |
1,387
|
|
|
|
|
|
|
|
|
|
|
|
|
1,387
|
Stockholders' equity, ending balance at Sep. 30, 2017 |
$ 324,556
|
|
|
500
|
|
1,546
|
|
(170)
|
|
766,480
|
|
|
(440,060)
|
(3,740)
|
Shares outstanding, ending balance at Sep. 30, 2017 |
9,760
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, beginning balance at Dec. 31, 2017 |
$ 296,121
|
|
|
500
|
|
1,548
|
|
(170)
|
|
766,508
|
|
|
(468,753)
|
(3,512)
|
Shares outstanding, beginning balance at Dec. 31, 2017 |
9,762
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (123)
|
|
|
|
|
3
|
|
|
|
(126)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
21
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 979
|
|
|
|
|
|
|
|
|
979
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ 0
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
0
|
0
|
|
|
Stock issued during period (in shares) |
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Convertible preferred stock dividend |
(906)
|
|
|
|
|
|
|
|
|
(906)
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(28,796)
|
|
|
|
|
|
|
|
|
|
|
|
(28,796)
|
|
Other comprehensive income (loss) |
(300)
|
|
|
|
|
|
|
|
|
|
|
|
|
(300)
|
Stockholders' equity, ending balance at Mar. 31, 2018 |
$ 266,975
|
|
|
500
|
|
1,551
|
|
(170)
|
|
766,455
|
|
|
(497,549)
|
(3,812)
|
Shares outstanding, ending balance at Mar. 31, 2018 |
9,783
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, beginning balance at Dec. 31, 2017 |
$ 296,121
|
|
|
500
|
|
1,548
|
|
(170)
|
|
766,508
|
|
|
(468,753)
|
(3,512)
|
Shares outstanding, beginning balance at Dec. 31, 2017 |
9,762
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
$ (122,624)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Other comprehensive income (loss) |
(2,700)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, ending balance at Sep. 30, 2018 |
$ 170,171
|
|
|
500
|
|
1,567
|
|
(170)
|
|
765,863
|
|
|
(591,377)
|
(6,212)
|
Shares outstanding, ending balance at Sep. 30, 2018 |
9,881
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Stockholders' equity, beginning balance at Mar. 31, 2018 |
$ 266,975
|
|
|
500
|
|
1,551
|
|
(170)
|
|
766,455
|
|
|
(497,549)
|
(3,812)
|
Shares outstanding, beginning balance at Mar. 31, 2018 |
9,783
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (47)
|
|
|
|
|
6
|
|
|
|
(53)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
37
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 833
|
|
|
|
|
|
|
|
|
833
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ 0
|
$ 0
|
|
0
|
|
0
|
|
0
|
|
0
|
0
|
|
|
Stock issued during period (in shares) |
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Convertible preferred stock dividend |
(907)
|
|
|
|
|
|
|
|
|
(907)
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(22,877)
|
|
|
|
|
|
|
|
|
|
|
|
(22,877)
|
|
Other comprehensive income (loss) |
(2,247)
|
|
|
|
|
|
|
|
|
|
|
|
|
(2,247)
|
Stockholders' equity, ending balance at Jun. 30, 2018 |
$ 241,730
|
|
|
500
|
|
1,557
|
|
(170)
|
|
766,328
|
|
|
(520,426)
|
(6,059)
|
Shares outstanding, ending balance at Jun. 30, 2018 |
9,820
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Increase (Decrease) in Stockholders' Equity [Roll Forward] |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Activity in employees’ stock plans |
$ (81)
|
|
|
|
|
10
|
|
|
|
(91)
|
|
|
|
|
Activity in employees’ stock plans (in shares) |
61
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Amortization of stock-based awards |
$ 532
|
|
|
|
|
|
|
|
|
532
|
|
|
|
|
Issuance of common stock and mandatory convertible preferred stock |
|
$ 0
|
$ 0
|
|
$ 0
|
|
$ 0
|
|
$ 0
|
|
$ 0
|
$ 0
|
|
|
Stock issued during period (in shares) |
|
0
|
0
|
|
|
|
|
|
|
|
|
|
|
|
Convertible preferred stock dividend |
(906)
|
|
|
|
|
|
|
|
|
(906)
|
|
|
|
|
Comprehensive Income: |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Net income (loss) |
(70,951)
|
|
|
|
|
|
|
|
|
|
|
|
(70,951)
|
|
Other comprehensive income (loss) |
(153)
|
|
|
|
|
|
|
|
|
|
|
|
|
(153)
|
Stockholders' equity, ending balance at Sep. 30, 2018 |
$ 170,171
|
|
|
$ 500
|
|
$ 1,567
|
|
$ (170)
|
|
$ 765,863
|
|
|
$ (591,377)
|
$ (6,212)
|
Shares outstanding, ending balance at Sep. 30, 2018 |
9,881
|
|
|
|
|
|
|
|
|
|
|
|
|
|