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Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands | Total | Class A Common Stock | Class B Common Stock | Puttable Arrangements - Common and Preferred Stock | Series A Convertible Redeemable Preferred Stock | Series A Redeemable Convertible Preferred Stock - Beneficial Conversion Feature | Common Stock | Common Stock Class A Common Stock | Common Stock Class B Common Stock | Additional paid-in capital | Additional paid-in capital Puttable Arrangements - Common and Preferred Stock | Additional paid-in capital Series A Redeemable Convertible Preferred Stock - Beneficial Conversion Feature | (Accumulated deficit) retained earnings | Accumulated other comprehensive (loss) income | Treasury stock at cost | Non-controlling interests | Previously Reported | Previously Reported Common Stock Class A Common Stock | Previously Reported Common Stock Class B Common Stock | Previously Reported Additional paid-in capital | Previously Reported (Accumulated deficit) retained earnings | Previously Reported Accumulated other comprehensive (loss) income | Previously Reported Treasury stock at cost | Previously Reported Non-controlling interests | Restatement Adjustment | Restatement Adjustment (Accumulated deficit) retained earnings
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Balance of beginning of period (in shares) at Dec. 31, 2016 |  |  |  |  |  |  | 133,376,000 | 0 | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, beginning of period at Dec. 31, 2016 | $ 664,392 |  |  |  |  |  | $ 534 | $ 0 | $ 0 | $ 2,721,432 |  |  | $ (1,037,701) | $ (1,052,055) |  | $ 32,182 |  |  |  |  |  |  |  |  |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-cash stock compensation | 64,788 |  |  |  |  |  |  |  |  | 64,788 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of Common stock into Class B common stock on January 31, 2017 (in shares) |  |  |  |  |  |  | (133,376,000) |  | 133,376,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of Common stock into Class B common stock on January 31, 2017 | 0 |  |  |  |  |  | $ (534) |  | $ 534 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock in initial public offering (in shares) |  |  |  |  |  |  |  | 35,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Issuance of Class A common stock in initial public offering | 456,359 |  |  |  |  |  |  | $ 140 |  | 456,219 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares (in shares) |  |  |  |  |  |  |  | 1,229,000 | (1,229,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares | $ 0 |  |  |  |  |  |  | $ 5 | $ (5) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note exchange transaction (in shares) |  |  |  |  |  |  |  | 18,683,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Note exchange transaction | $ 245,747 |  |  |  |  |  |  | $ 75 |  | 245,672 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of restricted stock and exercise of stock options, net of shares withheld to satisfy tax withholding (in shares) |  |  |  |  |  |  |  | 140,000 | 296,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of restricted stock and restricted stock units, net of shares withheld to satisfy tax withholding | (2,151) |  |  |  |  |  |  |  | $ 1 | (2,152) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification to equity upon expiration of put right on share-based awards | 5,500 |  |  |  |  |  |  |  |  | 5,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends to noncontrolling interests | (1,419) |  |  |  |  |  |  |  |  | (1,419) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions from/to noncontrolling interest holders | 167 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 167 |  |  |  |  |  |  |  |  |  |
Changes in noncontrolling interests | (36,617) |  |  |  |  |  |  |  |  | (11,569) |  |  |  | (1,164) |  | (23,884) |  |  |  |  |  |  |  |  |  |
Accretion of redeemable noncontrolling interests and equity | 317 |  |  | $ (5,183) |  |  |  |  |  |  | $ (5,183) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accretion of Series A Preferred Stock | 0 |  |  |  | $ (292,450) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of Series A Preferred Stock upon conversion |  |  |  |  |  | $ 265,368 |  |  |  |  |  | $ 265,368 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of redeemable noncontrolling interests and equity | (917) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (917) |  |  |  |  |  |  |  |  |  |
Net income | 93,764 |  |  |  |  |  |  |  |  |  |  |  | 91,465 |  |  | 2,299 |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment, net of tax of $0 for all years | 120,436 |  |  |  |  |  |  |  |  |  |  |  |  | 118,165 |  | 2,271 |  |  |  |  |  |  |  |  |  |
Unrealized (loss) gain on derivative instruments, net of tax of $0 for all years | 9,875 |  |  |  |  |  |  |  |  |  |  |  |  | 9,875 |  |  |  |  |  |  |  |  |  |  |  |
Minimum pension liability adjustment, net of tax of $0, $144 and $105, respectively | (377) |  |  |  |  |  |  |  |  |  |  |  |  | (377) |  |  |  |  |  |  |  |  |  |  |  |
Balance of end of period (in shares) at Dec. 31, 2017 |  |  |  |  |  |  | 0 | 55,052,000 | 132,443,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, end of period at Dec. 31, 2017 | 1,632,532 |  |  |  |  |  | $ 0 | $ 220 | $ 530 | 3,446,206 |  |  | (900,986) | (925,556) | $ 0 | 12,118 | $ 1,587,282 | $ 220 | $ 530 | $ 3,446,206 | $ (946,236) | $ (925,556) | $ 0 | $ 12,118 |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adoption of accounting standards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 45,250 | $ 45,250
Non-cash stock compensation | 10,791 |  |  |  |  |  |  |  |  | 10,791 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares (in shares) |  |  |  |  |  |  |  | 15,638,000 | (15,638,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares | $ 0 |  |  |  |  |  |  | $ 63 | $ (63) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of restricted stock and exercise of stock options, net of shares withheld to satisfy tax withholding (in shares) |  |  |  |  |  |  |  | 617,000 | 60,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting of restricted stock and restricted stock units, net of shares withheld to satisfy tax withholding | $ (2,528) |  |  |  |  |  |  | $ 3 | $ 0 | (2,531) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions from/to noncontrolling interest holders | 334 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 334 |  |  |  |  |  |  |  |  |  |
Changes in noncontrolling interests | (23,776) |  |  |  |  |  |  |  |  | (471) |  |  |  |  |  | (23,305) |  |  |  |  |  |  |  |  |  |
Accretion of redeemable noncontrolling interests and equity | (292) |  |  |  |  |  |  |  |  | (292) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accretion of Series A Preferred Stock | (61,974) |  |  |  |  | $ 265,368 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain upon conversion of Series A Preferred Stock | 74,110 |  |  |  |  |  |  |  |  | 74,110 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of Series A Preferred Stock upon conversion | 238,101 |  |  |  |  |  |  | $ 144 |  | 237,957 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of redeemable noncontrolling interests and equity | (635) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (635) |  |  |  |  |  |  |  |  |  |
Net income | 370,930 |  |  |  |  |  |  |  |  |  |  |  | 370,067 |  |  | 863 |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment, net of tax of $0 for all years | (200,006) |  |  |  |  |  |  |  |  |  |  |  |  | (200,498) |  | 492 |  |  |  |  |  |  |  |  |  |
Unrealized (loss) gain on derivative instruments, net of tax of $0 for all years | 13,709 |  |  |  |  |  |  |  |  |  |  |  |  | 13,709 |  |  |  |  |  |  |  |  |  |  |  |
Minimum pension liability adjustment, net of tax of $0, $144 and $105, respectively | (350) |  |  |  |  |  |  |  |  |  |  |  |  | (350) |  |  |  |  |  |  |  |  |  |  |  |
Balance of end of period (in shares) at Dec. 31, 2018 |  | 107,450,000 | 116,865,000 |  |  |  |  | 107,450,000 | 116,865,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, end of period at Dec. 31, 2018 | 2,050,946 |  |  |  |  |  |  | $ 430 | $ 467 | 3,703,796 |  |  | (530,919) | (1,112,695) | 0 | (10,133) | $ 2,079,890 | $ 430 | $ 467 | $ 3,703,796 | $ (501,975) | $ (1,112,695) | $ 0 | $ (10,133) |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adoption of accounting standards |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 28,944 |
Non-cash stock compensation | 12,994 |  |  |  |  |  |  |  |  | 12,994 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares (in shares) |  |  |  |  |  |  |  | 26,034,000 | (26,034,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of Class B shares to Class A shares | 0 |  |  |  |  |  |  | $ 104 | $ (104) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock at cost (in shares) |  |  |  |  |  |  |  | (16,008,000) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase of treasury stock at cost | $ (271,106) |  |  |  |  |  |  |  |  |  |  |  |  |  | (271,106) |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options (in shares) | 1,569,000 |  |  |  |  |  |  | 2,099,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Exercise of stock options | $ 11,762 |  |  |  |  |  |  | $ 8 |  | 11,754 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Distributions from/to noncontrolling interest holders | 1,356 |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,356 |  |  |  |  |  |  |  |  |  |
Changes in noncontrolling interests | (3,700) |  |  |  |  |  |  |  |  | (3,700) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accretion of redeemable noncontrolling interests and equity | (208) |  |  |  |  |  |  |  |  | (208) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accretion of Series A Preferred Stock | 0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reclassification of redeemable noncontrolling interests and equity | (370) |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (370) |  |  |  |  |  |  |  |  |  |
Net income | 937,664 |  |  |  |  |  |  |  |  |  |  |  | 938,484 |  |  | (820) |  |  |  |  |  |  |  |  |  |
Foreign currency translation adjustment, net of tax of $0 for all years | 42,935 |  |  |  |  |  |  |  |  |  |  |  |  | 43,068 |  | (133) |  |  |  |  |  |  |  |  |  |
Unrealized (loss) gain on derivative instruments, net of tax of $0 for all years | (7,950) |  |  |  |  |  |  |  |  |  |  |  |  | (7,950) |  |  |  |  |  |  |  |  |  |  |  |
Minimum pension liability adjustment, net of tax of $0, $144 and $105, respectively | 3,596 |  |  |  |  |  |  |  |  |  |  |  |  | 3,596 |  |  |  |  |  |  |  |  |  |  |  |
Balance of end of period (in shares) at Dec. 31, 2019 |  | 119,575,000 | 90,831,000 |  |  |  |  | 119,575,000 | 90,831,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance, end of period at Dec. 31, 2019 | $ 2,804,151 |  |  |  |  |  |  | $ 542 | $ 363 | $ 3,724,636 |  |  | $ 436,509 | $ (1,073,981) | $ (271,106) | $ (12,812) |  |  |  |  |  |  |  |  |  |

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