CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands | Total | Common stock issued [Member] | Treasury stock [Member] | Additional paid-in capital [Member] | Retained earnings (accumulated deficit) [Member] | Accumulated other comprehensive loss [Member] | Non-controlling interest [Member] |
Beginning Balance, Shares at Dec. 31, 2017 | | 269,335 | (88,504) | | | | |
Beginning Balance at Dec. 31, 2017 | $ 1,160,072 | $ 2,693 | $ (322,735) | $ 1,781,059 | $ (338,150) | $ (1,985) | $ 39,190 |
Stock-based compensation | | | | 17,147 | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares | | 1,374 | | | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes | | $ 14 | | (8,410) | | | |
Issuance of treasury stock, Shares | | | 0 | | | | |
Issuance of treasury stock | 0 | | $ 0 | 0 | | | |
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operations | (24,297) | | | (24,297) | | | |
Subsidiary issuance of common stock | | | | 0 | | | |
Purchase of treasury stock, Shares | | | (7,671) | | | | |
Purchase of treasury stock | | | $ (101,906) | | | | |
Warrants issued | | | | 1,364 | | | |
Net loss less net income attributable to non-controlling interests | | | | | 49,247 | | |
ASC 606 implementation adjustments | | | | | 57,438 | | |
ASC 606 implementation adjustments - discontinued operations | | | | | 3,157 | | |
Foreign currency translation adjustments, net | (1,562) | | | | | (1,562) | |
Unrecognized gain on derivatives qualifying as cash flow hedges, net of tax | | | | | | (659) | |
Acquisition of non-controlling interest | | | | 0 | | | (6,491) |
Net loss attributable to non-controlling interests | (3,490) | | | | | | (3,490) |
Ending Balance, Shares at Jun. 30, 2018 | | 270,709 | (96,175) | | | | |
Ending Balance at Jun. 30, 2018 | 1,141,624 | $ 2,707 | $ (424,641) | 1,766,863 | (228,308) | (4,206) | 29,209 |
Beginning Balance, Shares at Dec. 31, 2017 | | 269,335 | (88,504) | | | | |
Beginning Balance at Dec. 31, 2017 | $ 1,160,072 | $ 2,693 | $ (322,735) | 1,781,059 | (338,150) | (1,985) | 39,190 |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares | 1,600 | | | | | | |
Ending Balance, Shares at Dec. 31, 2018 | 270,955 | 270,955 | (99,731) | | | | |
Ending Balance at Dec. 31, 2018 | $ 1,580,427 | $ 2,709 | $ (460,543) | 1,881,494 | 132,842 | (5,389) | 29,314 |
Beginning Balance, Shares at Mar. 31, 2018 | | 270,601 | (92,648) | | | | |
Beginning Balance at Mar. 31, 2018 | 1,110,120 | $ 2,706 | $ (380,335) | 1,770,801 | (319,271) | (2,181) | 38,400 |
Stock-based compensation | | | | 7,212 | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares | | 108 | | | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes | | $ 1 | | (114) | | | |
Issuance of treasury stock, Shares | | | 0 | | | | |
Issuance of treasury stock | | | $ 0 | 0 | | | |
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operations | (12,148) | | | (12,148) | | | |
Subsidiary issuance of common stock | | | | 430 | | | |
Purchase of treasury stock, Shares | | | (3,527) | | | | |
Purchase of treasury stock | | | $ (44,306) | | | | |
Warrants issued | | | | 682 | | | |
Net loss less net income attributable to non-controlling interests | | | | | 76,972 | | |
ASC 606 implementation adjustments | | | | | 13,991 | | |
ASC 606 implementation adjustments - discontinued operations | | | | | 0 | | |
Foreign currency translation adjustments, net | (1,685) | | | | | (1,685) | |
Unrecognized gain on derivatives qualifying as cash flow hedges, net of tax | | | | | | (340) | |
Acquisition of non-controlling interest | | | | 0 | | | (6,491) |
Net loss attributable to non-controlling interests | (2,700) | | | | | | (2,700) |
Ending Balance, Shares at Jun. 30, 2018 | | 270,709 | (96,175) | | | | |
Ending Balance at Jun. 30, 2018 | $ 1,141,624 | $ 2,707 | $ (424,641) | 1,766,863 | (228,308) | (4,206) | 29,209 |
Beginning Balance, Shares at Dec. 31, 2018 | 270,955 | 270,955 | (99,731) | | | | |
Beginning Balance at Dec. 31, 2018 | $ 1,580,427 | $ 2,709 | $ (460,543) | 1,881,494 | 132,842 | (5,389) | 29,314 |
Stock-based compensation | | | | 21,523 | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares | 1,500 | 1,517 | | | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes | | $ 15 | | (6,711) | | | |
Issuance of treasury stock, Shares | | | 61 | | | | |
Issuance of treasury stock | $ 701 | | $ 846 | (144) | | | |
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operations | 0 | | | 0 | | | |
Subsidiary issuance of common stock | | | | 0 | | | |
Purchase of treasury stock, Shares | | | (6,148) | | | | |
Purchase of treasury stock | | | $ (65,070) | | | | |
Warrants issued | | | | 1,364 | | | |
Net loss less net income attributable to non-controlling interests | | | | | (157,483) | | |
ASC 606 implementation adjustments | | | | | 0 | | |
ASC 606 implementation adjustments - discontinued operations | | | | | 0 | | |
Foreign currency translation adjustments, net | 539 | | | | | 539 | |
Unrecognized gain on derivatives qualifying as cash flow hedges, net of tax | | | | | | 128 | |
Acquisition of non-controlling interest | | | | (29,913) | | | (28,890) |
Net loss attributable to non-controlling interests | $ (424) | | | | | | (424) |
Ending Balance, Shares at Jun. 30, 2019 | 272,472 | 272,472 | (105,818) | | | | |
Ending Balance at Jun. 30, 2019 | $ 1,316,207 | $ 2,724 | $ (524,767) | 1,867,613 | (24,641) | (4,722) | 0 |
Beginning Balance, Shares at Mar. 31, 2019 | | 272,013 | (105,879) | | | | |
Beginning Balance at Mar. 31, 2019 | 1,456,117 | $ 2,719 | $ (525,613) | 1,858,319 | 125,289 | (4,597) | 0 |
Stock-based compensation | | | | 10,129 | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes, Shares | | 459 | | | | | |
Common stock issued under stock compensation plans, net of shares withheld for employee taxes | | $ 5 | | (1,373) | | | |
Issuance of treasury stock, Shares | | | 61 | | | | |
Issuance of treasury stock | | | $ 846 | (144) | | | |
Accretion of redemption preference on redeemable convertible non-controlling interest - discontinued operations | 0 | | | 0 | | | |
Subsidiary issuance of common stock | | | | 0 | | | |
Purchase of treasury stock, Shares | | | 0 | | | | |
Purchase of treasury stock | | | $ 0 | | | | |
Warrants issued | | | | 682 | | | |
Net loss less net income attributable to non-controlling interests | | | | | (149,930) | | |
ASC 606 implementation adjustments | | | | | 0 | | |
ASC 606 implementation adjustments - discontinued operations | | | | | 0 | | |
Foreign currency translation adjustments, net | (156) | | | | | (156) | |
Unrecognized gain on derivatives qualifying as cash flow hedges, net of tax | | | | | | 31 | |
Acquisition of non-controlling interest | | | | 0 | | | 0 |
Net loss attributable to non-controlling interests | $ 0 | | | | | | 0 |
Ending Balance, Shares at Jun. 30, 2019 | 272,472 | 272,472 | (105,818) | | | | |
Ending Balance at Jun. 30, 2019 | $ 1,316,207 | $ 2,724 | $ (524,767) | $ 1,867,613 | $ (24,641) | $ (4,722) | $ 0 |